Back in 2012, the bullish thesis for US housing (the one everyone was hoping for, instead of the fake housing “recovery” driven by the parking of dirty foreign oligarch money in NYC triplexes aka the new Swiss bank account, the private equity distressed rental property bid, and bank subsidies courtesy of the delay in the foreclosure pipeline) was that all those millions of young Americans aged 18-34 would finally move out of their parents’ houses and start households of their own.