For non believers: what annoys you most about people who claim to be Christians?
The assumption that people who aren't Christians (or at least who are atheists) have no moral principles. (Certainly not a majority of Christians assume, or at least project, this, but it's among the most annoying things I run into - that my life is worthless, pointless, and without principle because I don't believe the same as they do.)
That the are worshiping the right God in the right church. But...no one else is.
I am a Christian, but I hate it when people claim the name of Christian and then treat people in a way that Christ would not want them to be treated.
The people who try to control other people's lives based on their own religious beliefs. (For example: people who are against gay marriage, or want to ban gay people in general.)
People who hate on others religion