It makes a lot of sense that the nature of questions regarding the "beginning" of the universe is nonsensical and anthropocentric, but it still feels like a cheap response that misses the crux of the issue. It feels like "science will fill in that gap eventually" and we ought to trust that will be so.

Matter exists. And there are physical laws in the universe that exist. I accept, despite my lack of imagination and fancy scientific book learning, that this is basically enough to deterministically allow intelligent live beings like you and I to be corresponding via our internet-ed magical picture boxes. Given enough time, just gravity and matter gets us to here—to all the apparent complexity of the universe. I buy that.

But whether the universe is eternal, or time is circular, or we came from another universe, or we are in a simulation, or whatever other strange non-intuitive thing may be true in regard to the ultimate origins of everything, there is still this pesky fact that we are here. And everything else is here. There is existence where it certainly seems there just as easily could be non-existence.

Again, I really do recognize the silly anthropocentric nature of questions about matters like these. I think you are ultimately right that the questions are non-sensical.

But, to my original question, it seems a simple agnostic-ish deism is a fairly reasonable position given the infantile state of our current understanding of ultimate origins. I mean, if you're correct, we don't even know that we are asking questions that make sense about how things exist...then how can we rule out something like a powerful, intelligent creative entity (that has nothing to with any revealed religion)?

I'm not asking rhetorically. How do you rule it out?