I believe that God is omnipotent and as such could simply uncreate any boogeymen that get in the way. We don't need to make up a bunch of mythology in order to explain things that happen on this world
But by the same token, one could argue that an omnipotent God is also a made-up, mythological concept that we don't need in order to explain things that happen in this world. Why do you hang onto the notion of an omnipotent God but reject the notion of a boogeyman of the likes of ha-Satan?