If you were a primitive human with a limited understanding of the world, mainly driven by survival instincts and impulses, then you saw a human from 2000+ years in the future fly in on a space raft, get out (wearing a space suit and helmet) you may think that human is a "god like" being from "the heavens". You'd draw crude pictures on cave walls depicting this - and such drawings are abundant around the planet.

Religions have tried to personify god into something relatable to simple humans, and religion is more about politics than it is about spirituality...but the fundamental notion that a universal force with some kind of sentience exists is far more likely than unlikely - even though it cannot be proven either way.