I'm very much like you. Live alone and tend to eat out a lot. When I eat at home I favor fresh stuff so there's rarely more than a couple of days worth of food in the kitchen.

That said, my "emergency closet" is full of canned and boxed stuff for an emergency. Once a year I replace it all and give last year's stuff to a charity that can make good use of it. Also, 10 gallons of drinking water and additional containers which can be filled quickly as needed.