I like small for consumption on the go, such as waiting for a train or bus, without wasting food/drink or overeating ... But I do agree with you about plastic waste. I'd prefer some other packaging solution, such as if a snack vending machine could sanitarily transfer the contents of a bag of chips to my own reusable, washable, foldable (when empty) snack bag. No, I don't have a good practical answer right now.