Religion is a weird case, not least because there are a lot of different, mutually exclusive religions. On the question of any specific religion, the majority of people in the world will claim that it is false. As a wise guy once said, we're all atheists, some people just disbelieve in more gods than others.
I was just wondering. Human minds are messed up in 1001 ways, but are there a few rational principles that most people already have down? Of course, the answers to this question are probably so extremely obvious that I haven't even considered them. But I ask all the same.