I don't think this was directed at me, but I will say that when someone mentions that they are a Christian, my defenses go right up and I do sort of keep my distance… I can't help it. I can't say I feel the same way about all religions-- just the 3 major ones, but I've had Muslim friends and Hindu friends and Christians are by far the worst. If someone is a Buddhist, I have exactly the opposite reaction and I want to know more. But then, it also depends on whether or not they take it super seriously or are just that way because they've never asked themselves why.
I think it has something to do with a lot of the more vocal proponents of 'moral issues', and how religious leaders can be more like politicians. I know there are more liberal churches that are really open and accepting (I was raised in one, my parents still go), and they're fine… they also tend to be pretty quiet about a lot of things. But I do have relatives that are more into the right-wing political aspects and are strictly anti-gay, anti-abortion, believe the rapture is coming, sinners will be punished, etc… and basically everything they say enrages me, not even because it's something I disagree with but because it's just blatantly untrue and has been proven as such.
Even besides how it has affected me personally, I think that religion can be extremely destructive, and I can't say the same about atheism… because atheism isn't really part of your identity the way that Christianity is, and it doesn't really influence your politics, or your actions… and it's not like your spirituality suddenly disappears because you're an atheist.
In fact, I would love it if Christianity would disappear forever… because it's unnecessary, and you can definitely be happy without it. It's just a case of the negatives outweighing the positives, as well as the fact that I'm 95% sure that it's all untrue.