monogamy and polygamy

[Cavernio]

I guess the topic is pretty much wide open as it is. Do you believe in polygamy or monogamy or both depending on situation, etc. Have your views on this changed over time? What about when raising kids-is it a good idea to have a few people on the side and raise children? Do you think it's not alright only because that's the way society functions right now, but think that it can work?
I suspect I'm asking a crowd a little young and inexperienced, but young people seem to be more open-minded than older ones, or at least they have more spare time and to ponder and question their own opinions.