Reformers have long observed city people loitering on busy corners, hanging around in candy stores and bars and drinking soda popon stoops, and have passed a judgment, the gist of which is: "This is deplorable! If these people had decent homes and a more private or bosky outdoor place, they wouldn't be on the street!" That judgment represents a profound misunderstanding of cities. It makes no more sense than to drop in at a testimonial banquet in a hotel and conclude that if these people had wives who could cook, they would give their parties at home.
Jane Jacobs (1989). “The Death and Life of Great American Cities”, Vintage