Re: unwarranted triumphalism
Every Society needs a release valve - if every society is three meals from anarchy, what'll it be if the small sexual light snack is denied or made difficult?
Might not be revolution or anarchy, but I think certain portions of the population might get meaner.
The late Sir Pterry mentions in 'Men at Arms' that humans are not naturally paid up members of the race - he suggests they need socialising to complete the subscription....
I suggest that for many, porn delivers some of that in lieu of how people today are either no longer close to others, or cannot meet their needs without imposing* on others.
* either aggressively or merely connecting.