I have to confess I would find the idea of not having a drivers license pretty extraordinary. If I lived and worked somewhere like New York City or London, I could imagine not owning a car depending upon the exact circumstances, especially given the availability of short-term rentals like Zipcar these days.

But essentially depending upon others to get out of the city for the weekend to anyplace that isn't likely an other city? Or being able to travel to destinations outside of towns/cities without having someone along who can drive? I'd find it incredibly limiting. In fact, I'm in the midst of planning a couple of hiking weeks in the Pacific Northwest that would be utterly undoable without renting a car.

Whatever works for you of course. I just can't imagine it.