Religious People: Why worship God?

Yes why would an all-loving and all-knowing being allow the eternal fates of his creation be decided in a lifetime that our decisions are largely based on the circumstances in which we find ourselves. Is being accepted by god a simple crap shoot as to who your parents are and which society you are born into? This is one good reason why the ideal that one religion/god is supreme and the rest are wrong, it is a flawed system.