In the UK, pretty much up until the mid-80s, most folk bought their fruit and vegetables at a stall, rather than a supermarket. You either brought your own bag or they put the goods in paper bags which could easily be used or recycled. You bought only what you needed. It was the same with butchers, where meat was wrapped in butcher’s paper and you weren’t’ forced to buy 500g of shrinked wrapped mince meat. You bought what you needed so less chance of waste. Sadly we then got railroaded by the supermarkets and told how to shop. I for one am more than happy to go retro, again.