Well honestly I believe christianity is an abomination that is destroying the world. But off the top off my head I can think of:
1. The fact that they use fear to motivate people into unquestioning faith.
2. Their religion has been perverted ever since King blah split the church so he could get a divorce (Yea I know I should have done the research to get his name but it's 3 am and frankly Im lazy)
3. Their religon has also been perverted from the very orgin of the bible. A council decided what to put in the bible and what to leave out.
4. This is the last one I'll say for the time being it also is based on a personal belief so feel free to ignore. I believe that christianity has severly damaged the cosmic order. Because it and other judaic based religons control most of the world karma has been put out of whack. My pagan brothers and sisters surely you have noticed that karma is not working as it should. It is my belief that because christian's and others of their ilk have not only perverted the value of the law of three-fold in that you can basically ask forgiveness and all the bad karma disapears but their dumping all of their energy into this vacum preventing the true Gods and Goddess' from keeping order.