It’s the same for the beginnings of life. We know loads about the conditions before in happened and after it happened, but nothing about that all important instant when it happened.

Fur the big bang’s genesis, I like the thinking that small pockets of potential started to form, since a pair of opposed charges is sort of the same as nothing. But that does go along the lines of “nature abhors a vacuum” type of thinking, which has been comprehensively proven wrong since it was popular. Also it doesn’t explain one of physics greatest mysteries: why is there so much matter and no antimatter. If things came into existence in opposing pairs, we should see equal amounts of both