Maybe that's it.
In the future we'll have the "birds, bees, porn" talk with our kids.
Sorta, like I'm told, Europeans do with alcohol.
So we start the kid on a small amount of softcore early - in a controlled family setting (lounge room). Later on we give them access hardcore stuff progressively.
By the time they are 18 and/or leave home - they should be able to view any attachment sent to them (in a business environment say) in a mature and responsible way.