God is eternal. He exists outside of time and space, therefore having no beginning or end.
Asking "Oh, then who made him?" is a pointless question because not only do you have no way of answering it, you naturally have to then ask "Well who created the one who created him?" and so on
No, that's precisely the problem, and a valid question to ask.
If the answer to that question is unknowabale, why would you believe this? If there is literally no logical answer, what compels one to believe something that is obviously not evidently true?
That's a rhetorical question, because I know the answer already (a combination of indoctrination, and fear of death). But what I'm saying is, you have no real, tangible, independently verifiable evidence that thing exists.
The only reason believers don't like this question is precisely because they cannot answer it. They have answers for everything except that. Don't you find that interesting???