The cornerstone of human intelligence is our desire to learn the explanation why things are as they are. The desire is so strong that if we can't explain something we come up with some imaginative explanations for those things: we invent gods.
Throughout the history the boundary between human knowledge and divine explanations has been pushed further and further away. We have come from explaining the simple things as act of gods to the point where we can reason almost the whole universe with scientific explanations. We can explain how the universe itself came to be without resorting to creation stories.
...but what triggered the big bang? What was there before that? Gods?
There is always the boundary be it the scale of the universe or down to the quantum realm. There is always the next question. And there is always the answer.
Assuming some day, digging deeper and deeper into scientific discovery explaining all the things, we end up with a proof of a god behind all the things after all, we would still be asking the next question: where did it came from?