I honestly wish I could (when I use a cashier, which I'm hoping to do again soon as I SUCk at self checkout) convince the cashiers at the store I shop at to please quit putting all the heavy stuff in one bag and all the light stuff in the other! Any insights as to why they do that? It's clearly what they're trained to do but they aren't supposed to let you bag your own so I have to let them do that then re-bag it balanced so I can walk home. I get that we're assumed to be walking five yards to the car, but... Are they worried about squashing stuff?