I look at soft core porn the way I imagine most mathematicians probably look at abacuses. Like, I get what it's for and understand its importance and all, but it doesn't mean anyone over the age of 14 is going to watch it. And though yes, films like Lord of the G String are still being made, I think that being caught with a copy is more likely to result in a laugh than a scowl.
The same goes for exercise tapes. People in the 70's and 80's might have been down to get sweaty and look like fools on their shag carpets in front of their TVs, but find me one person who uses them (or shag carpets, for that matter) today and I'll buy you a gym membership.
However, while they may be totally useless when looked at separately, blended together they become something else; something part leotard, part fake boob and part shirt that appears to be made from the fabric of a waiting room couch which barely covers up the wearer's crotch.
In short, they become Eroticise...