Personally I think the problem is overstated so long as you know going into it that you have to address it preemptively, and do so. For example, if one person leaves a group marriage it seems pretty obvious that unless the original home is abusive or unsafe that should be the one with primary custody. That doesn't mean the departing spouse should be cut off the childs life, of course, but I trust you see what I'm saying.
Yes, there would be ways to work things out, but I think you can agree that it would almost invariably be more complicated/take more time/money to settle than a traditional divorce. That'd be alright if only, say, 0.1% of the population engaged in polygamy. But if the numbers swelled too much, it could put a big strain on the legal system. And I feel like it's really difficult to guess how many people would want to practice it - presumably not many, but you can't do as you would with gay marriage and say, "There's always going to be a ceiling of about 10-15%."
I just think it could get really complicated.

Also, I have mail for you, but no idea where to send it.
See note!
Polygamy, why is it illegal?
07/10/2010 03:36:18 AM
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When potential welfare issues are removed, it's all just a matter of tradition and false morality.
07/10/2010 05:34:21 AM
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This explains Friday nights at Gilleys.
07/10/2010 01:26:37 PM
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Think of the implications of China's one-child policy in that light
07/10/2010 01:37:11 PM
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have you ever been to Gilley's on a friday night?
07/10/2010 05:12:11 PM
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No. Country music hasn't been produced since the mid-fifties.
08/10/2010 11:17:27 AM
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really? I guess that is when they stopped making real rock and roll as well
08/10/2010 02:33:15 PM
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I would assume due to practicality issues and such.
07/10/2010 07:49:16 AM
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I have a feeling the ACTUAL reasons are closer to moralistic reasons...
07/10/2010 12:30:33 PM
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This.
07/10/2010 05:35:40 PM
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There's a name I've not seen in a while.
08/10/2010 11:22:01 AM
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I think it depends how popular it would become.
08/10/2010 07:04:03 PM
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I don't think single wife mutiple husband can work
07/10/2010 05:55:33 PM
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Oh, it can
07/10/2010 06:51:59 PM
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Didn't you see Paint Your Wagon?
07/10/2010 07:21:54 PM
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Paint Your Wagon was about the California gold rush
07/10/2010 08:24:24 PM
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Lol.
07/10/2010 08:27:14 PM
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and that is the best back handed compliment I have had since the last time I saw my ex-wife
08/10/2010 04:24:40 PM
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Because we need someone for the far right to demonize now that gays are becoming mainstream.
07/10/2010 01:22:24 PM
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I only see a problem when it is run by a cult and girls are married off at 14
07/10/2010 05:18:13 PM
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For the same reasons Americans don't eat horse meat.
08/10/2010 02:58:24 AM
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I'm an American and I eat horse meat. *NM*
08/10/2010 05:19:51 AM
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Re: I'm an American
08/10/2010 01:02:23 PM
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At this rate, we'll soon be asking why kids can't have sex with adults. *NM*
08/10/2010 02:23:16 PM
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What the heck does that have to do with polygamy?
08/10/2010 02:57:37 PM
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Re: What the heck does that have to do with polygamy?
13/10/2010 04:22:24 PM
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You are also a Muslim, correct? Islam doesn't seem to have a problem with up to 4 wives. (at a time)
13/10/2010 04:12:44 PM
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