I have to live walking distance from civilization. I walk a lot. To work, to the grocery store, to visit grandma, to the mall, to the corner store.
I grew up close to downtown though, so I am pretty used to walking everywhere.
I think it helps to keep people having a minimum level of fitness.
We are lucky here though, we have lots of walking and cycling paths, and the people use them a lot.
The Rideau Canal here in Ottawa is the perfect place to walk, blade, or cycle. No cars, 7.8 K long, and it's gorgeous. In the winter you can skate it too.
Also Gatineau Park is really close, and is great for hiking and biking.