With how car-centric North America is, there isn’t much to walk to for a lot of people. Things are just very far from each other. I’d walk places a whole lot more if I had things at a reasonable walking distance, I used to do it all the time when I didn’t have kids and lived closer to the city. Back then, I sold my car less than a month after moving there, and relied on car sharing services for the odd trip outside of town.
Nowadays, I’m in a medium-sized agricultural town in Canada, not far outside the larger metropolitan area where half the province lives. Realistically, at a walking distance, I have a convenience store, a drugstore, and a small co-op hardware store. The closest grocery store is at least a 30 minute walk. Both my sons’ school and daycare, the closest market or shops I’d go at, they are all 4+ away.