And I really appreciate the sentiment (no sarcasm intended) about granting these couples equal rights, but marriage/married/spouse are just simplifying labels (besides the many legal ramifications). Are they married or single? Neither, so are they 'unioned?' All kinds of things divide between married and single, spouses or not. There is no real purpose in the distinction for equivalent legal relationships, in my view.
FWIW, I don't think it's all that important an issue - what we call it. But I've come to accept the position of gays - it's reserving a higher or special status for marriage between 'traditional' couples and denying it for SS couples. Or, more bluntly, maintaining same sex unions as second class. But, again, not a big deal. The big step, the 90% solution, is about rights. The vocal activists might spend a lot of time on that last 10%, but I can tell you my brother doesn't care, and his position, per him, isn't unusual at all. They'll refer to them as marriages, so will their friends and family, and if others call it something else - eh, whatever. His view in a nutshell.