If this whole "marriage equality" question had instead been posed as, "Should homosexual civil commitments (or whatever phrase) receive all benefits under the law and be recognized as being the equal of marriage?" you'd have heard nary a peep from me.
You:
Put the family breaks in a civil relationship. ... Treat them equally and I'm happy.
I may be thick (and I don't understand the meaning of your subject), but I don't see a material difference in those sentiments.