Fair points prodigal. what do you think about the legal incidents of marriage, though? For example, insurance benefits for partners, the right to make medical decisions, be present as a spouse would be in hospital settings, the right to inherit absent a Will, governmental and retirement benefits etc. These types of issues, not the ceremonial, emotional and spiritual elements of marriage, are the reason the government is involved. The "civil union" middle ground has appeal to me for that reason; frankly, I think the civil union aspects of ALL marriages are the only the government should be involved in. If paleo-Mormons want to have church sanctioned multiple marriages, I'm not sure that bothers me much, but the government should still have the power to recognize only the first without first amendment implications. The government can appropriately enforce elements of unions that impact society directly, or impact the due course of regulating property rights and who has the power to act on behalf of the couple, but beyond that I am not so sure.