The problem with sex from an existential perspective is that it’s inherently awesome and it’s inherently banal and cliche, and it’s both things at the same time. Hardline religious prohibitions against recreational fornication, for example, seem insanely anachronistic but also, undeniably, are based on a valid point: sex for the purpose of sex somehow seems spiritually empty. Reality, however, makes it manifestly true that everything that occurs in adulthood, especially the stuff we admire and celebrate, like art, skyscrapers, and getting decent at guitar, exists as a semi-conscious ploy to win some girl or guy’s favor. Studies consistently show significant negative correlations between sexual frustration and a more general existential frustration. And further, any acts that lack the promise of sexual reward - like say, attaching a solid fuel rocket to a car, moving to Montana, or becoming a Catholic priest - are not only pointless, they tend to make trouble.