Bill, your death will provide the definitive answers that you seem to be seeking. You will have absolute confirmation.

Only if you are right in your speculative view of reality. The evidence is that you're not.

because there IS no way you can prove whether or not there's an afterlife or a "God"

A god, with or without capital, could "prove" it in a moment. However, gods are looking remarkably like neoTemplars just now. Of course, the Second Coming could prove me wrong by the time you read this. But given the track record, don't hold your breath. And as for "prooof", too shay.

Why do you discuss it so much, Bill?
That, from whom?