But in point of fact, the way it works out is that Christianity tends to make people more generous, caring and trustworthy than atheism does. So it goes.

But this is not in point of fact. Citation very much needed.

I don't disagree that (strong, ie. 'God does NOT exist' rather than 'there is no evidence that God exists') atheism attracts some jerks, btw. Any belief that is essentially anti-X has the problem of attracting at least some people who simply enjoy punishing belief in X.