A religion typically has both practical and theoretical aspects.  The  former concern its moral teachings and rituals, the latter its  metaphysical commitments and the way in which its practical teachings  are systematically articulated.  An atheist will naturally  reject not only the theoretical aspects, but also the practical ones, at  least to the extent that they presuppose the theoretical aspects.  But  different atheists will take different attitudes to each of the two  aspects, ranging from respectful or even regretful disagreement to  extreme hostility.  And distinguishing these various  possible attitudes can help us to understand how the New Atheism differs  from earlier varieties.
Consider first the different attitudes an atheist might take to the theoretical side of a religion.  There  are at least three such attitudes, which, going from the most hostile  to the least hostile, could be summarized as follows:
1. Religious belief has no serious intellectual content at all.  It  is and always has been little more than superstition, the arguments  offered in its defense have always been feeble rationalizations, and its  claims are easily refuted.
2.  Religious belief does have serious intellectual content, has been  developed in interesting and sophisticated ways by philosophers and  theologians, and was defensible given the scientific and philosophical  knowledge available to previous generations.  But advances in science and philosophy have now more or less decisively refuted it.  Though  we can respect the intelligence of an Aquinas or a Maimonides, we can  no longer take their views seriously as live options.
3. Religious belief is still intellectually defensible today, but not as defensible as atheism.  An  intelligent and well-informed person could be persuaded by the  arguments presented by the most sophisticated contemporary proponents of  a religion, but the arguments of atheists are at the end of the day  more plausible.
Obviously one could take one of these attitudes towards some religions, and another of them towards other religions.  For  example, a given atheist might take a type 1 atheist position with  respect to Christianity and a type 2 atheist position with respect to  Buddhism (or whatever).  Or he might take a type 1 attitude  towards some versions of Christianity but a type 2 or type 3 attitude  towards other versions of Christianity.
Now,  among well-known atheists, it seems to me that Quentin Smith is  plausibly to be regarded as taking a type 3 attitude toward  Christianity, at least as Christianity is represented by prominent  philosophers of religion like William Lane Craig or Alvin Plantinga.  Keith Parsons, by contrast, seems to take at best a type 2 attitude towards Christianity and maybe even a type 1 attitude.  And  Jerry Coyne seems almost certainly to take a type 1 attitude, though  perhaps on a good day and with respect to at least some varieties of  religious belief he’d move up to type 2.  (I’m happy to be corrected by Smith, Parsons, or Coyne if I’ve got any of them pegged wrong.)
Now  let’s consider three different attitudes an atheist could take toward  the practical side of a religion, going again from the most hostile to  the least hostile:
A. Religious practice is mostly or entirely contemptible and something we would all be well rid of.  The ritual side of religion is just crude and pointless superstition.  Religious morality, where it differs from secular morality, is sheer bigotry.  Even  where certain moral principles associated with a particular religion  have value, their association with the religion is merely an accident of  history.  Moreover, such principles tend to be distorted by the religious context.  They certainly do not in any way depend on religion for their justification.
B.  Religious practice has a certain admirable gravitas and it is possible  that its ritual and moral aspects fulfill a real human need for some  people.  We can treat it respectfully, the way an anthropologist might treat the practices of a culture he is studying.  But  it does not fulfill any universal human need, and the most intelligent,  well educated, and morally sophisticated human beings certainly have no  need for it.  
C.  Religious practice fulfills a truly universal or nearly universal human  need, but unfortunately it has no rational foundation and its  metaphysical presuppositions are probably false.  This is a  tragedy, for the loss of religious belief will make human life  shallower and in other ways leave a gaping void in our lives which  cannot plausibly be filled by anything else.  It may even have grave social consequences.  But it is something we must find a way to live with, for atheism is intellectually unavoidable.
Here  too a given atheist might of course take attitude A towards some  religions or some forms of a particular religion, while taking attitude B  or C towards others.  Once again, Jerry Coyne seems to be  an example of an atheist whose attitude toward religion lays more or  less at the most negative end (A).  Perhaps Stephen Jay Gould took something like attitude B.  Atheists  of a politically or morally conservative bent typically take either  attitude B or attitude C (though I know at least one prominent  conservative who is probably closer to attitude A).  Walter Kaufmann  is another good example of an atheist (or at least an agnostic) who  took something like attitude B towards at least some forms of religion.  Indeed,  he seemed to regard religion as something that speaks to deep human  needs and whose moral aspects are of great and abiding philosophical  interest.
Now these two sets of possible attitudes can obviously be mixed in a number of ways.  That  is to say, a given atheist might take a more negative attitude towards  the theoretical side of a given religion and a more positive attitude  towards its practical side, or vice versa.  And he might take different mixtures of attitudes towards different religions or forms of religion.  For instance, he might take attitudes 2 and C towards some kinds of religious belief, and 1 and A towards other kinds.  Thus  we could classify atheists according to their combinations of attitudes  towards the practical and theoretical sides of religion or of a  particular religion -- A1, B3, C2, and so forth.  
An  A1 atheist, then, would be the most negative sort, especially if he  took an A1 attitude towards most or all forms of religion.  A C3 atheist would be the most positive.  At  different times during my own years as an atheist, I would say that I  tended to take either a B or C attitude towards the practical side of  religion, and perhaps attitude 2 towards the theoretical side (at least  until the latter part of my atheist years, when I started to move to 3  before finally giving up atheism).  No doubt I had moments  when I probably came across as more of an attitude 1 and/or attitude A  type atheist with respect to at least some forms of religious belief --  it’s easier to remember specific arguments with people than what one’s  general attitude was during a given year, say -- but overall I’d say  that I probably hovered around B2 territory for at least much of my time  as an atheist.  (Walter Kaufmann was one of my heroes in those days.  Indeed,  Kaufmann’s attitude towards Christianity -- which was more negative  than his attitude towards other religions -- influenced my own, and no  doubt helped delay my eventual return to the Church.)
I  find that atheists who fall on the most negative ends of these scales  -- A1 territory -- are invariably the ones who are the least  well-informed about what the religions they criticize actually believe,  and the least rational when one tries to discuss the subject with them.  And  when you think about it, even before one gets into the specifics it is  pretty clear that A1 is prima facie simply not a very reasonable  attitude to take about at least the great world religions.  To  think that it is reasonable, you have to think it plausible that the  greatest minds of entire civilizations -- Augustine, Aquinas,  Maimonides, Avicenna, Averroes, Lao Tzu, Confucius, Mencius, Buddha, Adi  Shankara, Ramanuja, et al. -- had for millennia been defending  theoretical and practical positions that were not merely mistaken but were in fact nothing  more than sheer bigotry and superstition, more or less rationally  groundless and morally out of sync with the deepest human needs.  And that simply isn’t plausible.  Indeed, it’s pretty obviously ridiculous.  Even  if all religious belief turned out to be wrong, it simply is not at all  likely that its key aspects -- and especially those aspects that recur  in most or all religions -- could have survived for so long across so  many cultures and attracted the respect of so many intelligent minds  unless they had some significant appeal both to our intellectual and moral natures.  Hence  a reasonable atheist should acknowledge that it is likely that  attitudes 2 or 3 and B or C are the more defensible attitudes to take  towards at least the ideas of the greatest religious thinkers and the  most highly developed systems of religious thought and practice. 
When one considers the prima facie  implausibility of the A1 attitude together with the ill-informed  smugness and irrationality of those who approximate it, it is pretty  clear that its roots are not intellectual but emotional -- that it  affords those beholden to it a sense of superiority over others, an  enemy on which to direct their hatreds and resentments, a way to  rationalize their rejection of certain moral restraints they dislike,  and so forth.  In other words, A1 atheism is pretty much  exactly the sort of ill-informed bigotry and wish-fulfillment A1  atheists like to attribute to religious believers. 
And here’s the thing: If there is anything new about the New Atheism, it is the greater prominence of atheists who at least approximate the A1 stripe. In Walter Kaufmann’s day, A1 atheism was represented by marginal, vulgar cranks like Madalyn Murray O’Hair. Now, equally vulgar cranks like Dawkins, Harris, Hitchens, Myers, and Coyne are by no means marginal, but widely regarded as Serious Thinkers. This is the reverse of intellectual progress. And we know what Walter Kaufmann would have thought of it.
And here’s the thing: If there is anything new about the New Atheism, it is the greater prominence of atheists who at least approximate the A1 stripe. In Walter Kaufmann’s day, A1 atheism was represented by marginal, vulgar cranks like Madalyn Murray O’Hair. Now, equally vulgar cranks like Dawkins, Harris, Hitchens, Myers, and Coyne are by no means marginal, but widely regarded as Serious Thinkers. This is the reverse of intellectual progress. And we know what Walter Kaufmann would have thought of it.
 
