Or even those who live in urban centers but like to get out of them on weekends and vacations. I've tried living for years in western US cities both with and without a car. Going without was much cheaper, and I managed to find entertainment and not starve, but getting a car vastly improved my quality of life. Trains and an occasional rental would probably have worked nearly as well in parts of Europe, but the US just has too much empty space between interesting places.