This. I live in Berlin, which invested heavily in public transportation over the decades, leading the majority of my friends to not even having a drivers license (me included). You can get anywhere pretty much anytime, often considerably faster than taking a car, especially on day time when you easily spend 30min just looking for a spot.

Plus if you combine public transport with a decent bike - no car will ever beat you in this city.

Heh, as a new arrival to Berlin I wish it had the quality of transit that Vienna does! :)