Well, and I save the money to buy and maintain the car, don't contribute to traffic jam and don't pollute the air with my non-existing car. Furthermore, I am accustomed walk quite a lot and thus doing something for my fitness and health.
If really needed I call a taxi or a tricycle. But starting a car for just buying an onion wouldn't come to my mind.
What do we learn from that? ... People are different, having different priorities and needs ...