Vulturex Maximus Pagan religions are easy. Generally they are too pragmatic to have too many moralistic rules that would interfere too much with business. They give people a recourse when the crops fail, when Bobby develops horrifying lesions and when its time to go to war. Not so with pushy monotheistic cults. Pagans recognize diversity and realize that they are probably just making it all up anyway.
Monotheists have it all figured out.
Their god is the only god and they are happy to kill anyone who disagrees. Vulture eggheads noticed that there was a rise in monotheistic cults a couple of thousand years ago. There had been earlier troubles. There was that Amun business in Egypt, and of course the Hebrews. But traditional priests and VI agents had squashed the former and the latter were made so paranoid by our continuous harassment that they weren't likely to try to convert the world.