(responding to cletus about New Jersey)<p>There is a cluster effect to our social lives that is just as important as the clustering effect that puts the epi-center of certain industries in particular geographic spots (for instance, the movie industry is centered in LA, the software startup industry is centered in the Valley, etc). To be specific: a lot of the parties that I want to go to are in Brooklyn, but none of them are in New Jersey. If I go to a party in Brooklyn, and then at 3 AM I am heading home, then for me getting home is just a 15-20 minute taxi ride. Whereas if I live in New Jersey, getting home from Brooklyn is at least an hour of trains and buses and walking.<p>This point would be moot if there were an equal number of parties in New Jersey that I wanted to go to (and therefore getting home to Brooklyn, from New Jersey, would also be a big ordeal) but there are none. I've never been invited to a party in New Jersey that I wanted to go to. Even when I lived in New Jersey, all the social events that I wanted to go to were either in Manhattan or Brooklyn. So, for me, it makes a lot more sense to live in Brooklyn.<p>I could maybe see living in New Jersey if the rents were dramatically lower, but they are not. I have a little studio apartment in Brooklyn that I pay $1,100 a month for, and in New Jersey I might pay $900 for an apartment of the same size. The extra $200 a month is just not worth it to me, not when the real cost involves being an hour further away from the social life that I want to have.<p>Not that I'm a 20-something, but I assume the logic is the same for them as it is for me.