Worth a read:

Stay-at-Home Mom Debate: It’s About Work Hours | New Republic.

When Friedan was writing The Feminine Mystique, the 40-hour-a-week office job was still a norm… Today, whether you’re male or female, if you’re taking home an upper-middle-class salary you’re expected to work an average of 50 hours, and probably more, a lot of it after you’ve gone home… Among American dual-career couples, in the 1990s, 15.2 percent of those with at least college degrees worked a joint 100 hours a week or more, whereas only 9.6 of couples without diplomas did that. Try to imagine what that 100-hour workweek looked like to a child: that’s five 10-hour days, plus commutes, for both parents.