[O]ne of the fastest ways to turn a believer into a nonbeliever is religious education. Teach someone, especially a child, an honest and objective overview of Christianity, Islam, Hinduism, traditional Chinese beliefs, Buddhism, animism, Sikhism, Judaism, Jainism, Bahism, plus the basics of a few extinct religions, and there is a good chance that this enlightened person will have a hard time convincing themselves that one of these belief systems is valid and all the others are not. Religious ignorance is faith's ally. Religious education is faith's enemy.
I've found this to be true for me as well. It's interesting to me how fundamentally similar the claims of many religions are, and this becomes increasingly clear as one learns more about other religions. Each set of religious followers is as convinced of their own religion's truth as the others are of theirs. Usually based on the same evidence, too: experience, testimony, visions, miracles, holy writings, etc. How is one to judge the truth of one religion over the others with such conflicting claims? Why is my religion more likely to be true than any other religion? Because it's mine? Because I happened to be born in this place at this time in history? I doubt it.