True, some cities are much better built for that sort of thing than others. I had San Francisco, Seattle, New York City, and Valencia in mind specifically - less so Los Angeles and Dallas-Fort Worth.

Agreed with the lifestyle part, though - it's really a question of how often you need to do things that require a car, and how expensive the next-best option is (taxi, car rental, ride-share, borrowing your neighbor's). If you want to drive three hours to see your Mom every weekend, you probably don't want to sell your car.