i think these questions are really uninteresting if you're gonna insist on being purely rational materialist about it, but i think it gets more interesting when you're willing to play with what reality might be a little more. There are religious motifs that repeat in many cultures about the eternal reocurrence. This idea that earth is made and destroyed in countless infinite, repeating cycles.
What if you and I have been going at this for a while?
But if you want the answers science can give right now, probably not