Wow Sheila! Why did you choose to get married? I suspect for the same reasons my partner (that's how I choose to refer to her) did - because we love each other, wanted to spend our lives together and wanted to show our commitment to each other. We are not technically married because at the time we decided to make our commitment to each other only a civil partnership was available to us. If we were doing it all again now, of course we would choose a marriage.
You seem to want to define us by the one thing that makes us "different" from you, suggesting that we adopt the term "gayhood"! In what circumstances would anyone ever wish to use that? What would it be used to refer to? I just don't understand the need for it. And why would gay people want "their own exclusive institutional definition of their relationships"? Simple equality is all any of us want.
I'm not sure why you're getting so hung up on semantics. What difference does it make how we choose to refer to each other? People use "partner", "wife", "husband", "other half", whether they are in straight or gay marriages. Surely, that's an individual choice. Why should we have to adopt a definition of your choosing such as "couple"? As for the "Miss/Ms/Mrs" thing, again, personal choice. Some straight married women prefer "Ms".
Are your ideas to segregate gay people, to make us stand out as different and be easily identifiable, pigeon-holed into the boxes you have defined for us, aimed at ensuring we are easily recognisable, so that you are able to keep your distance, make sure we don't encroach on your traditional (putting it kindly) going-on? Maybe we should all wear pink ribbons to make it easier for you.
I'm afraid I do find your views homophobic and, by the way, I find the generic word "gays" offensive.
Before gay people were able to marry or have civil partnerships, we didn't only have no legal inheritance rights, which I agree could be remedied in part with a will; more importantly, in my view, we had no rights as next of kin while our partners were still alive. If decisions had to be made about hospital treatment, end of life care or even decisions such as turning off life support, the gay partner had no legal right to be involved in them. He or she was completely shut out. They weren't even entitled to register their partner's death. Another important reason for demanding equal rights.