r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.
http://en.wikipedia.org/wiki/List_of_religious_populations
How do you account for the other two thirds of people who don't believe in Christianity and commonly believe things directly contradictory to it? Insofar as every religion was once (when it started) vastly outnumbered by the others, you can't use population at any given point in history as evidence that a particular religion is likely to be true, since the same exact metric would condemn you to hell at many points in the past. There are several problems with pascal's wager but the biggest to me is it's impossible to choose WHICH pascal's wager to make. You can attempt to conform to all non-contradictory religious rules extant but that still leaves the problem of choosing which contradictory commandments to obey, as well as the problem of what exactly god even wants from you, if it's belief or simple ritual. The proliferation of equally plausible religions is to me very strong evidence that no one of them is likely to be true, putting the odds of "christianity" being true at lower than even 1 percent and the odds that any specific sect of christianity being true being even lower.
There are also various Christian's who believe that other Christian's who follow Christianity the wrong way will go to hell.