I mean, personally, I actually don't believe that the Big Bang created everything out of ~~thin air~~ vacuum, because much like travelling backwards in time, that would break causality.

It makes much more sense for everything to just have always existed and the Big Bang is merely a very visible event + expansion afterwards.
I'm open to the notion that expansion and contraction happen in some sort of cycle, because well, many things do.

But for it to be cyclical to the point where it repeats precisely the same? Why?
Can't we just let the universe flobber on its merry way without assigning some higher meaning to everything it does?