No need to fall into the trap of "believing in creation without a creator."

1. The stuff of the universe always existed, as believed by Aristotle, and other Greek philosophers. Supernatural creation is not even necessary to explain the Universe.
2. Creation out of nothing is a logical contradiction. Only nothing can come from nothing. Something can only come from something.
3. The creative force of the Universe is nature itself. No need for a personal god. That's an unnecessary illogical leap.
4. It's not even a matter of belief, but of not accepting a supernatural explanation of nature without convincing evidence/proof.
5. Occam's razor, or why posit the existence of a personal god when there is no need to. The Universe behaves as you would expect it to if there were no god. But if you posit the existence of a god, then you have a lot of explaining to do.