To be honest though, I still don't think a creator is absolutely necessary. But I also think there is nothing wrong with the idea that there is one. I just personally don't think this creator, if exist, would belong to any of the major religion out there.
Anyway thermodynamics did it.
https://arxiv.org/abs/1203.3271
Most people won't like this answer, because it's too impersonal. Thus the search for a more inspiring origin story continues. There is no drama in thermodynamics, no love, no revenge, although there are explosions.
This reminds me of this quote from Jill Tarter of SETI, particularly the last sentence:
“Might it be the discovery of a distant civilization and our common cosmic origins that finally drives home the message of the bond among all humans? Whether we’re born in San Francisco or Sudan or close to the heart of the Milky Way Galaxy, we are the products of a billion-year lineage of wandering stardust. We, all of us, are what happens when a primordial mixture of hydrogen and helium evolves for so long that it begins to ask where it came from.”
source: https://www.ted.com/talks/jill_tarter_join_the_seti_search (@ 3:02)
(I copied this nearly verbatim from another comment of mine: https://news.ycombinator.com/item?id=37061363)
"All you ever were was a little piece of the universe, thinking to itself."