TBH
God's Adam and Eve were his perfect will way.. it wasn't until after the fall that multiple wives started..Cain who was cursed had a descendant who was the first polygamist when he took two wives.
Then after the flood, why didn't God provide the men with multiple wives if that were how He wanted it/
Noah had Mrs Noah and his boys had one wife a piece..
Many of you say that God gave David extra wives..
well God also told His men to kill whole cities of people and the babies too..
but we don't do that today as murder is a sin..
You also must look at the lives of those who had multiple wives and/or concubines (Abraham had a concubine)
there were bad consequences..
And Solomon really had idols that used to be wives.. because that's what he turned them into in his heart..
When Paul gives specifications for leaders and elders in the church it's always someone who has one wife.
Why is that if that is God's way?
And if that is not enough?
obey the laws of the land should be good enough.