This is a great topic of discussion. The whole concept of marriage is a European phenomenom, undoubtedly predicated by the Judeo-Christian tradition. In my opinion, it's a form of possesion, not unlike a chattel. We've heard of how Eskimos are offended if guests do accept to be with their "offered" wives. In the Hispanola civilization B.C. (before the Columbus invasion), as in other "New World" indigeneous cultures, there was no such thing as property. In fact, women of that rich island society of more that 1/2 million inhabitants (the land now shared by the Dominican Republic and Haiti), use to frequently change partners. And this was not the exception but rather the tradition. And it worked fine for them.
