What about the many couples who "open" their relationships?
I think what it really reflects is that the more men "perfect" their bodies, the more imperfect everyone else is, and so they end up being celibate because they are too good for anyone, being more perfect than anyone else, which is so boring. If you want someone just like yourself, go fuck your mirror.
Working out may make a hunky body, but it doesn't make an interesting mind or spirit, which are much more important.
Promiscuity was rampant in the 70s and 80s, and it made it very hard to find love, and that is a dangerous thing. Love is the most powerful force in the universe, and going against it is just asking for trouble, seems to me. And if you look for love, you will not get laid very often, unfortunately.
The fact is, once you have sex with someone, you are in a relationship. That's what it's about. Sex as sport is a myth. And every time you kiss a guy, you are getting all of his germs. So the more, not the merrier, the more load on your immune system. And that is how I survived the 80s to be here today.