Exactly. Now, you can find just 3 groups of people: * single and DINKY hipsters * super rich with kids * very poor with kids (no option to leave - basically

Exactly. Now, you can find just 3 groups of people: * single and DINKY hipsters * super rich with kids * very poor with kids (no option to leave - basically stuck) The problem with structure like this is that, when the next recession hits (and it will hit), the first two groups will leave the city immediately. I have feeling that solution for SF is to make it more "kids friendly" because people with kids tend to be more involved in community and they are less mobile.