It's not a good idea to pick one's religion based on the behavior of the enemies of G-d.
Yes I do assume Christianity is the true religion. As a convinced convert, that is obviously what I would do. If you don’t agree with that, well I understand, but please allow me my beliefs, and please do me the courtesy of not assuming that I hold those solely on the evidence of the behaviour of the enemies of God. I don’t “pick religion” based on what other people think. I hold to those beliefs because I think they are right. It’s extremely insulting to infer otherwise.