My kids have no concept about walk ups. I moved here to Florida from a 5 story walk up in the Bronx. You know, where you had to lug all of your furniture up 5 flights, the groceries, the laundry if you don't have a washer/dryer, the kids when they're sleeping and yourself after a hard days work.
It's funny how I never think about those poor saps delivering in my old neighborhood.