I'm only semi-car free. My wife owns a car, but when she goes out of town I'm temporarily car free. I use a bike because it's handier than walking....I can go to the grocery store and return with more stuff than I would like to carry on foot. still, I also have a "bundle-buggy" (grocery carrier) that I can use if I walk. I also regularily use public transit.

I can afford a car...I just don't want one.