They've been out of use at the major supermarkets in Melbourne since last year. I support the change. However, I find the "bring your reusable bag" system unwo

They've been out of use at the major supermarkets in Melbourne since last year. I support the change. However, I find the "bring your reusable bag" system unworkable for the following reason: I don't always know I'm going to go to the supermarket in advance, and don't always go straight from home. Sometimes I'd like to go on the way home from work, but I can't, because my bags are at home. Can anyone explain why we don't simply have a system where you borrow reusable bags for a refundable deposit, then bring them back all at once when you're ready? I want to just pay 50c for each bag I borrow, let them pile up at home until I have 10 or 20, then bring them all back and get my money back - maybe minus 10 cents to run the system. This was we reuse bags, but I don't have to bring them with me, which is just impractical sometimes. This seems obvious to me, but I haven't seen it anywhere. Obviously, people would be free to still bring their own bags if they prefer.