Kierkegarrd opined that constant pleasure is no pleasure at all [In the bottomless ocean of pleasure I have sounded in vain for a place to cast my anchor.] Since 2 of 3 marriages end in divorce, I was wondering if marriage was subject to diminishing marginal utility. As couples spend more and more time together, they get less and less pleasure. In fact, the couple would consume love until the marginal cost and marginal benefit are equal--at zero. Then they divorce.