Nothing is stopping you from doing that today. In fact, if you're really serious about advancing polygamy, this would be the way to start: show -- don't tell -- us how it would work. Because right now the poster children for polygamy are (AFAICT) all white male religious nut cases who just want to use it as an excuse to keep a harem.
I never said I want to be in a group marriage, so I don't know why you seem to be suggesting that I should "show, don't tell" anything. I just said I could see it working out for some people. The fact that there exists an entire subculture of queer and pansexual individuals who are in such group relationships seems to me the proof in the pudding that it should be ratified as part of our civil law. And not some horny old man looking to recreate a Turkish harem painting.
I think it would be wise to consider the possibility that maybe the legal institutions involved in marriage aren't up to scratch in terms of what humans can possibly do in terms of romantic and intimate relationships. It's better, in my opinion, to incorporate a method by which we can address these issues by more effective methods (as in don't ban something just because you don't like it. You ban it because it's destructive to the social order.).
You realize that there are legal scholars already positing their legality right now, right? It's not too hard to search Google to see some of the more interesting papers being written on the subject from the legal point of view.
The social and psychological aspects are still scarce since we live in a society built around western European Protestantism (heteronormative). So, whatever research that does exist is relatively new or limited in scope.
> You realize that there are legal scholars already positing their legality right now, right?
Of course. On my list of social causes worth spending time and energy on, polygamy ranks pretty low. If it's near and dear to your heart I wish you the best of luck.
It's not so dear as you wish to be. I merely recognize the nature of law is not unlike any other logical enterprise. When you allow one form of inference the other forms that depend upon it must be analyzed to see the limits of it. Just like how legal scholars debate the limits of speech even today. It's both academic and practical.
If the white male religious nut case can provide and care for the woman and any resulting offspring and the woman are willing and knowing participants in the harem.
What's the problem? That you don't like it? That seems rather bigoted.
The problem is the religious nut case part, which often leads to the reality being very different from your rosy hypothetical. In real life, polygamous relationships often involve older men with young, often underage, women who have been coerced into the relationship and are often sexually abused. I have nothing against polygamous relationships among fully fledged consenting adults. But that doesn't seem to be what most polygamous relationships are.
I could be wrong. I haven't done extensive research into this. If you want to convince me, show me the data.
You realize the data is scarce because the phenomena hasn't been studied, right? You seem to be hung up on the Sister-Wives nonsense and see it as the only viable data point in a truly unanalyzed section of human behavior. The fact of the matter is that I personally know people who are polyarmous and none of them are the creepy Mormon/Branch-Davidian type. Most that I know who are poly are queer (like myself) and far from religious.
If anything, it should be you that should go and create a research program analyzing the nature of poly relationships in humans and the underlying causes, not me. I merely pointed out the reality that our law should consider accommodation for those individuals as it does for others. All you seem to be bringing to the table is scare mongering that depends more on the tiniest of slivers of human society for the proposition that poly relationships should be illegal. Such a proposition is not tenable on it's face nor in its contents thus far. Or in simpler terms: please do your own research because I'm not here to convince you either way (but you seem damn sure to convince me that my poly friends are some evil bad fundies wanting to rape children).
Edit: sorry for the rudeness. I take things personally sometimes.
Given it's illegal most everywhere, data is hard or little to come by.
There are two large groups: one with a pretty 'dirty' record regarding abuse/child marriages and another with a clean record. So this could come down more to an environment/community issue than a polygamy issue where, in one community/environment, abuse and child marriages are largely the norm and the other it isn't.
Warren Jeffs' Fundamentalist Church of Jesus Christ of Latter-Day Saints && Apostolic United Brethren. The former having the bad record and the latter having the clean record. (&& being the separator to avoid confusion) The former is larger than the latter but the latter is the second-largest church that practices polygamy.
E:
The burden of proof is also on you to prove that polygamy leads to abuse/child abuse as you are the one making the claim. Given there's little/no data to support either side, you'll have to wait for more research. Which would likely involve legalizing the practice and conducting studies.