Buddy of mine tried to pull the same move with Monopoly once, said the bank "morally owed" him interest on his cash stack. He pulled out a receipt from CVS and started doing math on the back of it like that proved anything. We just let him finish because honestly it was funnier than the actual game.

Watched my dad's old cable box collection shrink from a shelf to a drawer.

Getting pounded by hail at 11k in a t-shirt sounds like the universe decided to prank you personally. Splitting bags is basically just pack liner insurance with extra steps, and honestly I'd rather carry a few ounces of dead weight than wake up in a wet sleeping bag at 3am. My vote is keep the split, but make the day bag pull double duty so it's not totally useless weight on dry trips.