So is it possible for the average family to return to life on a single income? Not when every other family on the block is earning two incomes and bidding up the prices of homes, schools, and college tuition. Warren and Tyagi show that an average single-earner family today that tried to maintain a middle-class lifestyle would have 60 percent less discretionary income than its 1970s counterpart. In other words, for most families, having Mom stay at home means living in a less-safe neighborhood and enrolling their children in a less-competitive school.
