There have a flurry of books in recent months on atheism. Writing about them in The City Journal, Theodore Dalrymple – a non-believer himself – discusses What the New Atheists Don’t See: To regret religion is to regret Western civilization:

…Lying not far beneath the surface of all the neo-atheist books is the kind of historiography that many of us adopted in our hormone-disturbed adolescence, furious at the discovery that our parents sometimes told lies and violated their own precepts and rules. It can be summed up in Christopher Hitchens’s drumbeat in God Is Not Great: “Religion spoils everything.”
What? The Saint Matthew Passion? The Cathedral of Chartres? The emblematic religious person in these books seems to be a Glasgow Airport bomber—a type unrepresentative of Muslims, let alone communicants of the poor old Church of England. It is surely not news, except to someone so ignorant that he probably wouldn’t be interested in these books in the first place, that religious conflict has often been murderous and that religious people have committed hideous atrocities. But so have secularists and atheists, and though they have had less time to prove their mettle in this area, they have proved it amply. If religious belief is not synonymous with good behavior, neither is absence of belief, to put it mildly.
In fact, one can write the history of anything as a chronicle of crime and folly. Science and technology spoil everything: without trains and IG Farben, no Auschwitz; without transistor radios and mass-produced machetes, no Rwandan genocide. First you decide what you hate, and then you gather evidence for its hatefulness. Since man is a fallen creature (I use the term metaphorically rather than in its religious sense), there is always much to find.
The thinness of the new atheism is evident in its approach to our civilization, which until recently was religious to its core. To regret religion is, in fact, to regret our civilization and its monuments, its achievements, and its legacy. And in my own view, the absence of religious faith, provided that such faith is not murderously intolerant, can have a deleterious effect upon human character and personality. If you empty the world of purpose, make it one of brute fact alone, you empty it (for many people, at any rate) of reasons for gratitude, and a sense of gratitude is necessary for both happiness and decency. For what can soon, and all too easily, replace gratitude is a sense of entitlement. Without gratitude, it is hard to appreciate, or be satisfied with, what you have: and life will become an existential shopping spree that no product satisfies…
Though eloquent, this appeal to moderation as the key to happiness is not original; but such moderation comes more naturally to the man who believes in something not merely higher than himself, but higher than mankind. After all, the greatest enjoyment of the usages of this world, even to excess, might seem rational when the usages of this world are all that there is…