The selves that married are no longer the same. If interests, goals, values change along with a changing self, you have a different dynamic set up between the two persons. In some cases this dynamic is such that the marriage no longer seems viable. When we combine this change with the awareness that we will be living longer, it appears more probable that people will seek a second or third partner with whom they feel more compatible. It is no longer sufficient for a man simply to be a terrific provider and for a woman to be an outstanding homemaker.
People expect more.
Men and women want intimacy, romance, affection, understanding, commonality of interests, conversation, common values, and exciting sex, to mention a few of the more common requirements. They want an equal partnership with one another, where both parties participate equally in all of the decisions pertaining to the home and to child-rearing, regardless of who is earning more money. Increased longevity, increased affluence, and increased opportunity for personal growth, when combined with significantly changing expectations regarding marriage, suggest that people must learn new or different ways of relating to one another if their marriage is going to survive. When this is not possible, either for lack of desire, capacity, or interest on the part of one or both parties, divorce becomes an option. Mortality A magazine article I recently read stated that people, particularly women, who are currently age 65 are expected to live until 85.