It's a result of evolution. Some have a dominant 'faith' gene which allows them to fit in within groups. In days of yore, this was an excellent survival strategy. While the agitators where off discovering, fighting, challenging, etc., a significant number kept their heads down and focused on harvesting the wheat. The same tendency to pay obedience to tribal leaders has merely been shifted, first to rock/tree gods, and now to more embelished versions.
Heh. Great post.