Since the history begins, we study that more than world's 95% wars are caused by religions. It is religion that preach and thus create wars against other religions like Judism agains Islam, Islam against Chiristinity, Christinity against Hinduism and so on. Present day wars (Islam's war on Kufar, Osama's war on U.S and America's war on terrorism) are also fruit of religious hatred and prejudice which are destroying the humanity.
I think all the religions have created to enslave other people and get power. What do you think and why?