There is a really interesting dynamic in humans where we have either evolved or socially constructed (or both) this very strong sense of importance (and also shame) around sex. Part of this has to do with ownership and the fact that we possess things and status which we pass on to a known set of descendants.
You can look at a beautiful peace of art that's colorful and evokes incredible emotions .. and that's art. Two people fucking and it's not art, it's porn .. unless it's in an art gallery as an exhibit about the porn industry.
I wish our University wasn't so insanely big. It'd be interesting to find other sentient life and see if all life tends to evolve this specific attitude around sex or if it's unique to our species.