I posted this on the new thread and I'll post this here:
God's original design was a man and a woman - Genesis 2:24 says "Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh." It's not the two becoming one - but one flesh - the word being "basar" which is a physical word. It's not a spiritual becoming one but a physical one. I don't think you can become one flesh with many people.
God also forbade the kings of Israel to be polygamous (Deut. 17:17). Look at the trouble when they disobeyed, including deadly sibling rivalry between David’s sons from his different wives; and Solomon’s hundreds of wives helped lead Solomon to idolatry (1 Kings 11:1–3). Also, Hannah, Samuel’s mother, was humiliated by her husband Elkanah’s other wife Peninnah (1 Sam. 1:1–7). When Abraham took another woman, he started an entire rivalry and divide between people that is still going on today!
I think God allowed polygamy for a time due to the hardness of their hearts (much like He did divorce). When it WAS practiced, nothing good came out of it. In the New Testament, there are descriptions of what kind of man should be the leaders of the church - and one requirement is that he be the husband of one wife. If this is a quality that is honorable along with the other qualities of being sober-minded, respectable, hospitable, able to teach, etc., then I think it's a quality that all Christians should strive for.
BTW - 009NY - I see that you said in your profile that you are Presbyterian but go to Shelter Rock Church - which is a Baptist church, not a Presbyterian church. I know because I'm great friends with Steve and Michel Tomlinson (and have been for over 25 years now. Is that the church you go to? If so, good church!