“In high-density cities like San Francisco, Seattle, and Washington, D.C., no group is growing faster than rich college-educated whites without children … By contrast, families with children older than 6 are in outright decline in these places. In the biggest picture, it turns out that America’s urban rebirth is missing a key element: births.” Derek Thompson: The Future of the City Is Childless. You can definitely feel this reality in my neck of the woods. “San Francisco has the lowest share of children of any of the largest 100 cities in the US.” (Yes, all those little toy scooters are for the adults!)