I use instant noodles as a staple "I have nothing in and no time to cook" food. Always have some in, in the cupboard.
That's part of the problem. "Processed" food can last months/years, fresh food will be off within days. If I buy fresh food not for a meal I already have planned tonight, most of it gets binned. So I generally now buy food once I've decided what meal we're having tonight, which means most nights not using fresh food.