I'm quite partial to the idea that an inquisitive "child god" was sneakily playing around with the "universe making machine" and spawned this monstrosity. They're now hiding under the table hoping none of the grown up gods notice the mess they've made. They did try and and dictate some clumsy random rules but that didn't go well. Then a friend with a little more sense tried to inculcate a "spiritual" approach to life. But neither were much thought through and both child gods have long abandoned us.