I think marriage, i.e. church ordained with government benefits, should be rethought. The idea of marriage, of a church approving of a marriage, can be a separate matter. The idea of civil unions, that is, governments recognizing a couple as such, and extending all the benefits of such a title appropriately, makes more sense, then allowing church groups decide who should/shouldn't be seen as equals in this democracy. I might be wrong, but you are suggesting no benefits/government involvement in marriage?