The scientific explanation of how beliefs operate in the brain would deal with the vessels of the mental representations, not so much with their meanings.

To say that scientific explanations and theories provide for a complete worldview would be endanger of being scientistic. Does science tell us what our values should be? That's doubtful. So when you say you find naturalism and science more "satisfying" than religion, that value judgment seems nonrational or at least nonscientific.

This point about competing myths and stories was made in the novel The Life of Pi in its postmodern argument for theism.