Andrew Cherlin, a sociologist at Johns Hopkins, telephone calls these “capstone marriages.” “The capstone will be the final stone you devote location to create an arch,” Dr. Cherlin mentioned. “Marriage had previously been your first move up. These days it’s often the past.

Andrew Cherlin, a sociologist at Johns Hopkins, telephone calls these “capstone marriages.” “The capstone will be the final stone you devote location to create an arch,” Dr. Cherlin mentioned. “Marriage had previously been your first move up. These days it’s...