The problem with religion, because it's been sheltered from criticism, is that it allows people to believe en masse what only idiots or lunatics could believe in isolation.
Quotes by Sam Harris
Consider: every devout Muslim has the same reasons for being a Muslim that you have for being a Christian. And yet you do not find their reasons compelling... Why don't you lose any sleep over whether to convert to Islam? Can you prove that Allah is not the one, true God? Can you prove that the archangel Gabriel did not visit Muhammad in his cave? Of course not. But you need not prove any of these things to reject the beliefs of Muslims as absurd. The burden is upon them to prove that their beliefs about God and Muhammad are valid. They have not done this. They cannot do this... The truth is, you know exactly what it is like to be an atheist with respect to the beliefs of Muslims. Isn't it obvious Muslims are fooling themselves? Isn't it obvious that anyone who thinks that the Koran is the perfect word of the creator of the universe has not read the book critically?... Understand that the way you view Islam is precisely the way devout Muslims view Christianity. And it is the way I view all religions." .
Letter to a Christian Nation (pp. 6-7)