Porn isn't going anywhere. The oldest known depiction of a human figure is pornographic [0]. Since porn will always exist, better that it be produced and consumed in the open, legally speaking. Sex workers deserve the same safety and labor protections as the rest of us. [0] https://en.wikipedia.org/wiki/Venus_of_Hohle_Fels
Imagine the need to sneeze but never feeling the release. Backlogged desire for energy exchange nearly satisfied by staring out of a one way mirror (search results, Ex Machina) into an ironic public display of intimacy.
An advanced society is romantic. Leave something to the imagination - construct metaphors to describe the act if it becomes so urgent that it must be advertised.
Sometimes I will hear explicit lyrics allowed to project into public spaces. Are we baboons or humans?