The problem with introducing any imaginary magical creature is that it poses far more questions than it could possibly answer. The most obvious is “where did the god(s) come from?” It’s just a pointless regression that gets us nowhere. So while science can’t (yet) say definitively that there was no invisible magical creature to get the ball rolling, we can see that logically there’s no value in positing the question in the first place. It’s like arguing we can’t definitively prove that the universe was created by a million invisible dancing chickens. Sure, we can’t definitively disprove that (yet) but… what’s the point in positing it in the first place? Notions of gods are merely a null conjecture.