Well, also cities are fun for younger people. Anyone that I know who lives in a city can move out if they want to, but quality of life would drop dramatically.
I've been in Oakland, SF, Seattle and now am in some far (1h away) suburb (exurb?). I feel like the quality out here is good, but the stuff to do is smaller scale. Biking is safer and the city (Boston) is a short train (or drive) away. Similar sentiment from a friend in Antioch (CA).