As strange as it might seem, I use all of that to evaluate things. And then when I reach a conclusion, I assume I'm wrong and try to prove why. If I can't prove it wrong, then I ask other people if they can find something wrong with my conclusion. If no one can, then I assume it to be true until proven false.

In the case of your example, just one instance or possibility of it not being true is enough to prove to me that such a belief isn't worth utilizing as a philosophy or force of reverence and meaning. Not that it isn't true though, but that because it can be shown to be unknown of whether or not it is true or false, I see no good reason to assume it is true. So I would keep it in mind and wonder, but be undecided in whether or not I believe in God.