It's a great city, I still miss living there. I used to use public transport to go to work and it was awesome. Going to work by bike on large bike lanes is even better. Not to speak of the lack of car noise, which is the most annoying thing in cities - though you won't realise that until you experience a car-free day or zone for the first time.

I'm currently living in Lisbon, which also has a very good living quality, but I'd say that the living quality in Copenhagen is unparalleled. I'd move there anytime if I had a good job opportunity there. I still work in Academia and Copenhagen University does not have many open positions, so no chance for me. Not that I complain about Lisbon's sunshine.

You can still have a car in Copenhagen, if you really want one, you know. It's not a matter of choices, it's a matter of nudging people in the right direction and tax them in a way that improves living quality and society as a whole. However, living in a low/no-traffic area can only be appreciated properly once you've experienced it. IMHO, it's one of those things that need to be experienced before forming an informed opinion. That's why it can be hard to sell politically.