Could the big bang have been caused by the inversion/collapse of a universe wide black hole?
It doesn't explain how "stuff" began to exist in the first place, but maybe it would explain how/why singularity big bang occurs. So basically, over hundreds of billions of years black holes across the universe suck up everything and black holes merge until there is literally nothing left for them to exert forces on causing it to invert and collapse and expelling all the matter that has been trapped in it making the "big bang" a cyclic thing.
It doesn't explain how "stuff" began to exist in the first place, but maybe it would explain how/why singularity big bang occurs. So basically, over hundreds of billions of years black holes across the universe suck up everything and black holes merge until there is literally nothing left for them to exert forces on causing it to invert and collapse and expelling all the matter that has been trapped in it making the "big bang" a cyclic thing.