> nearly all atheists "believe" in natural selection, but almost no atheists have more than 2-3 children To go back to Chesterton by more or less paraphrasing

> nearly all atheists "believe" in natural selection, but almost no atheists have more than 2-3 children To go back to Chesterton by more or less paraphrasing what he says about the "German pessimist mouse" in Orthodoxy, you can't get a moral out of nature that you don't bring to nature in the first place. So that decision can be quite consistent if these atheists don't feel that they have some kind of "duty to the race" or something that should come well before their own well-being or that of their loved ones. (In reality the situation is more complicated, but that's by the by.)