I can't see how a new fridge is a solution to that problem. If every time you go to the supermarket you buy more food than you'll be able to eat before the next time you go there, eventually you'll have to throw away some food, unless it lasts eternally. The standard solution to that is not going to the supermarket when you're hungry, and it works for me -- actually, if I go to the supermarket when I'm stuffed, it works too much.

but you still have to remember where you store the food

I don't remember ever having trouble locating stuff in a fridge.