Well guess what, I've investigated religious belief, rituals, behaviors, and even the psychology of belief. That is an excellent basis for understanding how theists behave.
The interesting thing about how the brain evolved with religion is that theists do not arrive at their beliefs rationally and through the frontal lobes. They appeal to, and activate, the emotion and reward centers of the brain, which is why theists find so much satisfaction believing. It's essentially a high. About 15% of humans do not have the kind of "wired for God" trait, so are less likely to be religious.