God of Man

I had a theory that god(s) are really nothing more than an extension of their societies and the things that they (and i mean their leaders) felt were important to guide their people through the world they only partially understood. It would explain not only why so many religions and gods have similar fundamentals but how they've evolved off of core ideals and are rooted in customs where they originated. These "god(s)" would really just be nothing more than exaggerated characters sporting extremes of basic emotions and ideals that humans experience, hate, love, vengance, justice, ect. Because why with all of the space between the objects in space (including us), the infinite span forward, backwards and present time would something that started everything act like something that takes up such a small fraction of existance?