A male friend, pictured here, said my book needed to address this question, so here's an excerpt from the new book that does so. Feel free to add your comments to the end of the article.

One reason people often believe that orgasm is purely a beneficial outlet is that it seems to solve the problem of too much sexual energy—or perhaps too much semen if you’re male. This impression seems irrefutable, in part because wet dreams are a natural phenomenon of adolescence. It’s logical to assume that the body is making extra semen that has nowhere else to go.

Excerpt from Cupid's Poisoned Arrow: From Habit to Harmony in Sexual Relationships.

Chapter One: Biology Has Plans For Your Love Life

Hit by Cupid’s arrow! What an exhilarating, enviable state of affairs. Everyone wants to believe that the key to lasting romantic bliss is a partner with whom you feel a passion so intense that it can never fade. Yet, have you ever fallen in love with total abandon, experienced wonderful lovemaking, been sure you wanted to stay together forever—and then noticed recurring emotional friction arising between you and your beloved? If you’re married do you have a sense that the honeymoon is over? Perhaps one of you sometimes becomes clingy and demanding while the other feels devoured and needs "space." Maybe you experience subtle, periodic irritation, or a sense of stagnation that is gradually extinguishing your former delight in each other. Perhaps you engage in spectacular fights interspersed with passionate reconciliation.

This subconscious alienation—which mates so often encounter despite their desire to remain in love—is the result of an unsuspected poison on Cupid’s arrow.