I've just finished reading The God Delusion by Richard Dawkins. The Wikipedia page summarises it very well. I highly recommend you read the book and see how truly terrible all religion is.
The crucial argument for me is that people believe what their parents and religious teachers teach them. If you are religious and believe in one particular religion, it is just because you happened to be born then and there - your religion is not the only one and you would have had another religion if you were born somewhere else. So stop having blind faith and stop indoctrinating your children and stop harassing everyone else and stop insulting and killing other people.
From now on read "ethnic cleansing" as "religious cleansing" and cringe whenever anyone says "Christian child". It's time to go on the offensive. Just say no to religion.
In school we had Religious Studies (only about the bible), put on plays based on biblical stories and had Latin prayers twice a week in Westminster Abbey. In school I was a scientist. Please read the book and enjoy Dave's writings - I particularly enjoyed Worthless Religions.