

The shampoo, I think, ages after 336 hours. 100% completion seems like madness. Luckily, I’ve botched that already, so I’m not tempted.
As for breaking items: I usually hate those, too. Both the recent Zelda games and the last Animal Crossing suffered from them. But they work here, for reasons I can’t explain. For the most part, I got better items long before the old ones perished.
That’s just having a friend and is perfectly normal. Your ex has no say in that matter.