I've had a car almost constantly since I was 16. When I moved for college at 17, my parents kept me on their insurance plan. When I was 19 (and after one [completely sober and not entirely my fault] accident) they realized this was stupid and took the car back till I could pay for insurance. Man..my apartment was in a central, convenient location but still, it was annoying as fuck having to take the awful bus system everywhere, walk to get shit, wait for people to come over..I don't mind walking once I'm high, but I don't want to walk to get it!
When I got my car back I realized how much I appreciated it. Now that I'm trying to get myself together a bit and I'm staying with my parents, I don't really mind that I don't have enough money saved up to pay for the insurance, tag renewal, speeding ticket I got, etc. It helps me stay sober because I only have one friend that lives way out near my parents, and he doesn't get dope, just methadone that I take if I'm really losing it and need something. So I don't really have the choice of driving an hour each way to get dope.
I do love the independence of having my own vehicle though, and it will be nice to have the car back on the road in a few months.