Christians claim to have complete faith in the word of God, but generally don't even spend the time to learn the original languages in which the Bible was written. They read translations of translations, sure (or more commonly listen to someone else's interpretation once a week), but I don't find that convincing. Maybe they aren't so convinced. Maybe we aren't so different.
I was a Christian Scientist, a denomination that taught God's power and influence was more attainable then the average flavor of Christianity. If I lived by the values of Jesus I could, with complete faith, do as Christ did with God working through me. The analogue to Star Wars is very appropriate. Live like a Jedi and when you truly believe you can lift a rock with your mind, it will happen. JC's disciples were the Jedi of the Bible, healing folks long after the ascension.
I tried healing myself and others as a Christian Scientist. Surprise, surprise, it didn't work. The theological out for my failure was that I didn't have enough faith that it would work. I agreed there. More than that, I knew I was fundamentally incapable of complete faith in what I found unbelievable. So I embraced my disbelief and here I am.
Sometimes I think the vast majority of theists, if not all, are also incapable of complete faith in their supernatural stories. I would think an underlying skepticism in that which is contrary to experience is a feature of human nature. Surely there is selective pressure for it, evolutionarily speaking. The question is, how to get them to embrace their disbelief and move on?
Or maybe they just need to believe a little harder and start levitating rocks. ;-)