Religions doesn't cause wars at all, people do. I'm not religious, but I'm also not blinked enough and blinded by irrational hatred of religion that I can't see the realities of the way people are.
Blaming "religion" on the actions and choices of humans is tantamount to me, going around beating people up in the name of "Bob", some guy I know, and then people getting angry at "Bob" and holding him to blame for the actions that I decided to take.
The whole "religion is responsible for all evil and wars" is just a way for people to remove the blame from their own race of people on to something else. It shows a lack of respect for the atrocities that people have carried out to try and blame it on anything other than the people who carried them out.