I dunno?... the ancient Jews had multiple wives.
I do not believe Polygamy is a viable idea in modern culture, I am not a fan of Mormons (the new monogamous ones or the old and born again polygamous ones)after reading about how they were formed.
but if you look at the old testament of the Bible:
In Exodus 21:10, a man can marry an infinite amount of women without any limits to how many he can marry.
In 2 Samuel 5:13; 1 Chronicles 3:1-9, 14:3, King David had six wives and numerous concubines.
In 1 Kings 11:3, King Solomon had 700 wives and 300 concubines.
In 2 Chronicles 11:21, King Solomon’s son Rehoboam had 18 wives and 60 concubines.
In Deuteronomy 21:15 “If a man has two wives, and he loves one but not the other, and both bear him sons....”
There are a lot more verses from the Old Testament that allow polygamy, but I think that the above are sufficient enough to prove my point.
its a wonder King Solomon had any time to govern!!
The Bible also gives some great examples of the problems with multiple wives.