Making sense of divorce requires making sense of marriage. Yet, while the legal literature abounds with publications about the difficulties with modern divorce, it rarely mentions marriage. What is the role of marriage in the modern era? Does it continue to involve a lifelong commitment? Does it depend on the perpetuation of different roles assigned by gender? Should marriage remain the principal focus of societal provisions for childrearing? What is the role of the state in regulating this most intimate of relationships? This Article attempts to address these questions by working backwards. With the decline in the importance of religion and of the other societal and economic forces that made lifelong unions central to the social order, the...