"Men used to live in boardinghouses quite commonly. You had places like the old Y.M.C.A.s. These were really significant parts of the housing stock a century ago. They have since become far less common... I think it’s flipped... There’s much less of a stigma being a 40-year-old man living alone than being a 40-year-old man living with a male roommate. Living alone has become far more viable. A hundred years ago, that would have been completely different."
Says an NYU sociology professor, Eric Klineberg, quotes in the NYT article "Age 31 and Up, With Roommates. You Got a Problem With That?"