My eldest keeps asking me to by lunch meats in, then she goes our for a couple of days, doesn't use them, but gets upset if we use them before they go bad. Needless to say, I also stopped getting them.
For us at school it was cheese sandwiches every day, because that's what my dad liked. I can only eat them now if they have loads of salad on as well! Always found peanut butter too dry.