Cars should be banned in cities. The justification is simple:
(1) Cars create air pollution, and air pollution is one of the biggest problems in cities;
(2) Cars create noise pollution, and noise pollution is one of the biggest problems in cities;
(3) Cars require a lot of real estate (roads, parking lots, etc), and lack of real estate is one of the biggest problems in cities;
(4) Cars kill people, and killing people is one of the biggest problems in cities.

It's pretty simple, really. Besides, you have a fat ass and could probably use the exercise of having to walk a few blocks to get to your destination.