People with a college education are now less likely to divorce than they were a few decades ago, and they're more likely to describe their marriages as happy. That finding really surprised me. It appears that those with a higher education have been more able to dismantle strict traditional roles and, in doing so, gain more freedom. I call it a seesaw marriage, one in which both the man and the woman take turns being the breadwinner, making it possible for each of them to experience career advancements or breaks at different times.