YOU WILL EARN MORE MONEY. Men today tend to think of marriage as a consumption item—a financial burden. But a broad and deep body of scientific literature suggests that for men especially, marriage is a productive institution—as important as education in boosting a man's earnings. In fact, getting a wife may increase an American male's salary by about as much as a college education. Married men make, by some estimates, as much as 40 percent more money than comparable single guys, even after controlling for education and job history. The longer a man stays married, the higher the marriage premium he receives. Wives' earnings also benefit from marriage, but they decline when motherhood enters the picture. Childless white wives get a marriage wage premium of 4 percent, and black wives earn 10 percent more than comparable single women.