I know, I know – shut up already. But here ya go:
If I say 1 + 1 = 2, I don’t need to bring god into it to justify it. But I do need to invoke god or the bible to justify 1 + 1 = 74, and to silence critics of that statement. For this reason god, the bible etc is often used to justify irrational, harmful, hateful, inhuman crap that there just isn’t any other justification for.
As long as christianity is driven by dishonest or irrational things like fear, indoctrination, bias, etc it will always tend to support negative, irrational, immoral things. Those practices are coercive, like threatening someone with a gun – very rarely is a gun waved in someone’s face to get them to do something nice.
I also would like to say that goodness is not something christians have a monopoly on. Nor is christianity the only route to being a kind, warm, wise, courageous or generally worthwhile person. And in my opinion it’s not even in the top 3. It’s nice to see it work out that way though : )