[maxander]

As someone who hangs out in circles where polyamory is common, I can say that it doesn't quite work out this way. There are certainly the super-desirable guys who have unreasonably-many unreasonably-attractive partners- but they still only have so much time in the day, they can't sustain real relationships (or even consistent sexual relations) with everyone. Those with only a fraction of these golden boys' attentions will occupy the rest of their romantic energies with others, and those others will occupy the remainder of their romantic time with others, and so on "down." Its hard for everyone to wind up happy, but no harder I think than in monogamous crowds.

(And the same thing happens, symmetrically, with the super-desirable girls. And pseudo-symmetrically with gays and lesbians and bisexuals and etc etc etc.)