I am not sure where you live, but if you lived in LA, San Francisco, NY or Chicago mass transit is a must. When I lived in SF I had a car. It remained parked until I used it to go camping or had to take tools to a job site.
I worked out of the city. I would take a bus or my bicycle down to the train station, jump on Caltrans and either snooze, read a book, drink coffee, people watch or get into some crazy conversation. Man, being back in Detroit makes me miss it more. Tired of sitting traffic to get anywhere. It blows. lol