Purpose of "The Pedestrian"

The purpose of "The Pedestrian" and why he wrote it was to tell us that maybe that the world will be like that someday. Everybody is always inside watching TV and minding their own business. While only one person will get tired of being inside watching TV and will go outside for a walk. He is warning us that if life will go like that in 2053, the world will be a disaster, maybe to teach us to be more active and not watch TV 24/7.