The interesting thing about the scriptures is that ALL of the polygamous characters in it demonstrated with their very lives why it is contrary to Natural Law. The Bible is the story of God and man. As Christians, we do not see all biblical heros the way muslims see Muhammed! Our heros are flawed and broken men (Jesus and his Immaculate Mother excepted, of course). They tell the story of why we needed a Savior. It is irrational to point to OT heros and say “they did it, it must be OK.”
This very thread is another example of why it is so crucial to be catholic. Once you wander off and start to trust in your own judgement, you can convinced yourself of nearly anything! The prohibition against polygamy in catholicism is NOT disciplinary like prohibiting the eating of meat on Lenten Fridays. It is an inherent moral issue.
I’m pretty sure this 2,000 year old church has had some polygamist converts over the years! It seems like a tough question, but it really isn’t. What’s worse, being a kid whose father suddently becomes a visitor and no longer any sort of ‘husband’ to the mother or a kid who grow up watching his father spread his limited love and affection amongst multiple wives with the inevitable pain and suffering that inherent betrayal inflicts on those women? IMO, it is less abusive to the women and the children to (upon conversion) stick with the original wife and sever ties with the others. He must support the raising of those kids, but he cannot string their mothers along as second class women.
I’m sure this offends modern sensibilities (how dare you judge them, just let them be happy!). The thing is that you cannot, by definition, be happy when you are tied to self-destrictive behavior! There is no such thing as a happy drug addict. No such thing as a happy homosexual couple. No such thing as happy polygamists. All three of these groups will protest my statement, but tough. Reality hurts, just not as bad as ignoring reality does.
How sad that we even have to argue this after all these years.