Living in MN there have been a few days each winter when we'd not be able to get to a store. But there's really no need for my freezer (meat, shrimp, veg, cheeses, nuts, sauces) and pantry (commercially canned beans, tomatoes, fruit, diced chilis, artichokes, beets, tuna, rice, pasta, popcorn, cake mixes, baking ingredients, spices) to have the quantity of food I've tucked away, stacked 3 deep. If we ever decide to move, I'm pretty sure I'd need 4 months lead time to use up what's on-hand.
I've set myself a goal to cook from ingredients on-hand until everything's in a single-layer again.
The grocery list should be pretty short for the next few weeks -- milk, OJ, eggs, eventually bread (after I've used up the yeast that's on-hand).
How much is "enough" in the pantry and freezer at your home?