IMO, the carry weight limits prevent too much random barrelmancy. You can't realistically carry around more than 3/4 barrels when exploring for the first time. Sure, you can load up on barrels for a particular fight if you've already fought and lost it, but ... well, if you want to play a game with all fun removed, that's your choice.
Although I kinda feel you shouldn't be able to have beyond some low multiple of the weight that encumbers a character in their inventory, either through pickup or transfer. I had fun making this, but it is a bit ridiculous.