Another thought occurs to me. Pleasure is dandy, but it can't match love. I think that people's ceaseless search for the superficial rewards of transitory pleasures tends to lead them somewhat astray and they often lose themselves in the process. They forget why they're here. The search for pleasure doesn't satisfy their much deeper needs which have to do with the experience of love, not mere pleasure.

People will die on behalf of a great love. They won't die to attain another dandy orgasm.