You don’t seriously justify polygamy on the basis of past primitive social systems. Human sacrifice and cannibalism have been practiced throughout history, and even today. However, we do not want the roll back civilization to the primitive systems and take humans back to a savage existence.
“You don’t seriously justify polygamy on the basis of past primitive social systems.”
If you ask me which violates God’s law and natural law, homosexuality or polygamy, I’d say homosexuality.
Now, I also wrote “No, I don’t want polygamy legal either.” However, it is not unnatural for a male mammal to mate with more than one female. And while scripture doesn’t hold polygamy up as the best, neither does it roundly condemn it or say it is perverse.