Would that be same kind of question as “where did the Big Bang come from?”. That’s a lot of energy that came from somewhere as well seemingly for no good reason.
I also wondered immediately about dark matter; could it be that’s where the counter-balance of momentum went? Like most galaxies spin one way and most dark matter would then have to spin the opposite way.
I am not a physicist so this is all random guessing of course.
I never finished the book, but this reminds me of God's Debris by Scott Adams which explores a philosophy of pandeism (where God annihilated itself and became the universe).
that’s exactly how it all started, at least according to john 1:1
There are many parameters that do not have a reason for their value.
You can say the exact same thing about mass. Obviously it came from somewhere. And it could have taken angular momentum with it.
So it’s a similar question. Where does this asymmetry come from.