You are mistaken. I agree there is no way to prove or disprove anything. You may prove it to yourself as a working conclusion. Nothing absolute.

As for ignorance (no way to understand), that is the illusion of ignorance. It is the belief that humans just can't understand God/the universe. Nothing could be further from the truth. The universe is understandable. There is an intelligence throughout it, and nothing happens outside of that design.

Most people hide out in the belief in ignorance. It saves them from having to think about things. "God only knows." At the same time, they believe they know everything.

That's not to say everything is understandable from our current human perspective. But that perspective is impermanent. We all evolve in our understandings, eventually becoming one with all of it (we become God - there is no where else to go).