We are fully aware of what theists claim to believe, but do they really believe it? We've seen the hypocrisy, and it certainly looks like many do not live in accordance with what they claim to believe. They often attribute this to human imperfection, but I cannot help but wonder if a better explanation might be the incomplete nature of their belief. If they believed - I mean really believed - wouldn't they devote themselves completely to their god? How could they not?
I am suspicious that theists claim to believe certain things more because of social pressures, real or imagined, than because of actual belief. We know full well that faith confers all sorts of social privileges on the faithful. Couldn't this be far more important in driving religion than belief itself?