Yglesias asks, “what do people have less of than they had 40 years ago?” Krugman nominates family time:
[W]hat we have is a situation in which American families have more stuff, but they have managed to afford that stuff only by being two-income families, with ever less family time — unlike their European counterparts, who have gained in shorter hours and vacations what they lost in stay-at-home wives.
(Chart from (pdf) the Federal Reserve Bank of Minneapolis)
The Dish 