The last thing I want is to turn this thread into another religious debate. QL has enough of those ongoing. Let us just discuss this as a cultural concept for the regulation of society and essential human needs of which love is one of.
Any system can be abused or twisted in an imperfect world. The question is, does this concept offer a framework that people can satisfy thier needs in a civilised manner given both parties are willing?
And please remember that polygeny is a concept that outdates Islam and Christianity and has been around for a lot longer than you think.

Regards, H.