Obligatory warning that someone is going to ask "What is love" and then an oft - abused 90's song is going to come into play.
I'm kind of surprised so many people here are poly-somethings! I didn't know there were so many of you. As RedKing says, there's 'sleeping around', but it sounds like what you guys are talking about are emotional attachments.
I've got no problems with it although I will reiterate the point that it can be more complex than a monogamous relationship. But if you can do it, and find it enriching, then why the hell not!
I'm with Vector on the 'possibly never going to get married' thing. I like mah bro's too much. This is probably going to have a negative impact on my life when all my friends graduate and move away from me, but I'll cross that bridge when I come to it. I do have one close friend who I think I'll have for my entire life (he's too dependent on me as an emotional dump - tank, haha.)
Who's your healer? And where's the gm?
As for this, given evident problems in my mothers family with polygamy, I'm simply going to state that i suspect one of the reasons Christianity became popular in Africa is because much like Rome, the women liked it better then what came before it.