Generally, the ones who believe it most have read it the least. They are usually the same ones who buy the lies that the preachers sell them, mainly because it's easier to have an opinion if it comes pre-chewed.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'