One thing I would point out to anyone who says that Religion has caused wars so it is evil and should not be practiced is that in the past nations have gone to war over money and fishing rights. So does that make those things in and of themselves evil, do you refuse to eat fish or get paid in money for your job because those things are evil and using them means you are trying to throw mankind back to the dark ages?

Okay I will go now, but I think it is a good point to make. Man has a long sad history of using just about anything as an excuse to kill. It's a fact of history.