Why is Reddit so hostile to Christians?

So I'm new here on Reddit and I've noticed this place is not really a place for Christians, it's been a while I've realized that, people there seem to have a deep hatred for Christianity that seems abnormal. In most subs, if you talk about christianity you will be immediately scorned and insulted, and get lots of downvotes. From what I've seen, Christians here are always treated like idiots who don't know anything and don't add anything to discussions. Even in /r/christianity there are more people with a negative view of Christians and Christianity than actual Christians.

As this is an Anglican sub, I will say, even if you claim to be part of an inclusive and LGBT affirming church such as the Episcopal Church and the Anglican Church of Canada (even though I don't often use this argument, as I disagree with such churches in a few positions, even though I'm an episcopalian myself), you will be hostilized, because the problems seems to be in Christianity as a whole no matter what denomination you belong, and no matter how inclusive this denomination is.

What's the source of all this hate? Why does that happens more on Reddit especially?