The convenience is hard to beat even with good public transportation.
Yes, cars are a horrible implementation of socialism. Everyone pays for extensive roads networks and maintenance because cars are impossible to use without them. And then everyone pays for cars and maintenance because traveling is impossible without them. And car dealerships get rich scamming your mother.
You can go anywhere at anytime on foot, as long as somebody doesn't build a wall. Public transit isn't supposed to be door-to-door. It's about enabling true freedom of movement by connecting you across longer distances. Cars are about making all distances long.