The universe didn't get here by itself.
That's my proof of God.
Where's your proof that the universe hasn't always existed, and therefore had no need to be created?
So backward. The Steady State model has been demonstrated to be pseudoscience.
Steady state model - Wikipedia
That Wikipedia entry is accurate in the context of the Steady State Model, but the Big Bang Theory doesn’t predict a beginning of the Universe necessarily. Just the Universe we experience now.
The BBT only goes back to the moment of expansion, it doesn’t describe the singularity (if that’s what it actually was) or what was before the singularity (if it is even meaningful to say “before”) It could be - and I’m not saying there’s any real rigorous math or hard evidence one way or the other - that the Universe existed before the singularity. Whether we would recognize it as the Universe, who can say? We will probably never know.
Of course, that doesn’t answer the question “Where did the Universe come from?” It only pushes the answer back.
It is an assumption that the Universe doesn’t have some sort of property that causes it to necessarily come into existence. It is also an assumption that it did. Either way, to claim to understand why there is a Universe is arrogant at worst and an baseless assumption at best.