Hi Bill,
From what I understand, it seems as though the fundamental basis behind your argument against changes in marital liberty is that it could provoke further changes - the "slippery slope".
What distinguishes this situation as being a "slippery slope" from being "progress"?
One can label it as they wish. The fact remains that those who argued in favor of same-sex marriage claimed that it would NOT lead to demands for other 'marriage' rights, such as polygamy. Call that anything you like; opponents of same-sex marriage said it would happen, proponents said it would not. It has happened.
It seems to me that where we disagree though, is the existence of a causal relationship between polygamy and each of the outcomes that you have described, or at least, the severity of each one.
The government of Canada is actually making the arguments; I am reporting them. They link the alleged activities of the group demanding polygamous marriage to their request because they (allegedly) perform them. It would be unreasonable to make the case that all those who seek polygamous marriage would do these things. It is not unreasonable to make the case that the ones who do these things - do these things.
1. Men will decide to use water torture rituals to raise their children because they have more than one wife? I question this as being simply absurd - cannot identify any causal relationship! Whoever would do this clearly has other problems, and their polygamy is certainly not the issue that needs addressing.
I believe the government of Canada is making the case that the group demanding the right to polygamous marriage as a sacrament of their religion also perform other sacraments of their religion and these are some of them.
2. Neglected children - I agree that this will be causally increased in SOME cases. But this is the fault of the person's character and morality, not their polygamy, and I suspect that anybody prepared to neglect their children due to polygamy is probably already doing so, monogamously. Polygamy is not the issue that needs addressing here, but the person.
Personally, I agree with you. I doubt the government of Canada will get far with this argument, but they are making it.
3. Increased competition against young males - possibly. But I doubt this would be extremely severe in effect. But this should force young males to increase their merit for attraction (skills, career, etc.) - anybody who is only able to attract a lady because all the other blokes are unavailable (as a result of monogamy) is a pretty sorry state, and should be encouraged to improve somehow.
In the US, there are a couple of small alleged polygamous 'towns' that are offshoots of the LDS Church. In my reading, it appears that they are run pretty much precisely as described in Canada; patriarchal dominance by a couple families; other males are not welcome and are indeed run off. Bear in mind that they don't compete in an otherwise-open society; they compete in a very small closed and insular society which is utterly devoid of any other form of religion or marriage. There is no open competition; one either is or is not of the family in power.
4. Multiple underaged wives of older men: their choice, not yours, not mine. Liberty.
Then we cross another line, that being consent. The argument is not only that the wives are underaged, but that they do not give their consent. So we strike another of the traditional concepts of marriage off the list.
It seems as though the argument is also fundamentally based upon the fallacy "argument ad antiquitam" - appeal to tradition/old ways, i.e. 'x is better because it's been like that for many years'. If this argument made any sense, we wouldn't get anything done.
I can't speak for Canada, but in the USA, our law is based upon two things; the Constitution and Common Law. Common Law is traditional law. We always look to the past unless there is compelling reason not to - such as violation of constitutional rights. So far, there has not been found a constitutional right to multiple marriage.
An interesting topic to consider, nonetheless. To be honest, I don't even feel strongly about same-sex marriage/polygamy in particular, as I don't feel it affects me directly. However, I do care about our rights and liberties as people, which encompasses this issue. And as far as rights and liberties are concerned, despite them not directly applying to my life, I recognise the following:
I don't see the denial of a group to do as they please and call it something that has a legal definition as denying them their rights. If so, then once again I point out the slippery slope. From same-sex to multiple marriage. From multiple marriage to what, exactly? When some suggested that there was no reason that children, closely related people, or even farm animals could not also claim infringement of their rights, it was laughed at. But we made the jump from same-sex to multiple-marriage. Now what? Shall we again claim there will be no 'next' claim? I contend that there will be a 'next'. There is always a 'next'. Where do you draw the line?