As you mentioned earlier some riske' stuff existed during eras when you'd least have expected it. I suppose we could institute harsher censorship, satisfy the 'marms' and expect those 'underground' or black market activities to flourish beyond what we're seeing today? Perhaps in a more artful way. Won't that be nice? Bring on the romance novels! (boring)
When every other word,in a song lyric,movie,cable show is an F word/obscenity, or worse,it inures everyone to the "shock value",debases the society and culture;not to mention making those words useless.
The in your face,everywhere you turn use of pornography removes the provocative stimulation,leaves little if anything to the imagination,dulls the senses,and turns sex and even lasciviousness into tedium;ennui inducing boredom, which leads to the need of more and more perversion,to titillate.