[1] http://www.paulgraham.com/start.html
This is just a scaled-up version of what has already existed for years. The reason it's not more common is because it's logistically difficult to organise. I doubt that difficulty will suddenly decrease. The majority of people will always have families or different lifestyle preferences.
So I'm doubtful that society will be "dragged down" to a point where this is the social norm.
Hence, I think that the opprobrium and derision in this thread is stronger than it needs to be.
(For the record I don't advocate slut shaming and enjoy the company of promiscuous women. Just pointing out that Rayiner's logic applies equally well here.)
In any case, I'm glad you honest and intellectually consistent about your views. Sadly it's quite uncommon to see.