I don't think you appreciate just how incredibly massive this country is. I have to drive 15 miles to work everyday. If I couldn't drive, I would literally just starve and die (or, I suppose start working as a local farmhand).
It's funny, I feel the same way about people who live in small areas and don't have the ability to independently go anywhere they want at any time without having to rely on someone else. The "walkable city" feels like a hellscape archetype for the most captive audience you could ever possibly conceive...