LINK
56 Reasons to Have Sex
Some of my personal favorites:
9.) Protect your pearly whites by stepping up to the mic. Semen contains zinc, calcium, and other minerals proven to fight tooth decay.
14.) Put more pep in your step. Rhode Island-based relationship expert Scott Haltzman, M.D., says that women absorb some of the testosterone men secrete in their ejaculate. The payoff: “The increased testosterone can have energy-boosting effects in women.”
53.) Because the clitoris is the only organ whose sole function is pleasure.
[Edited to add: This is from Women’s Health, so yeah. Heterocentric.]