I never think about my birth certificate.
You were born with male genitalia lol. You would have to go back in time and change your sex right there to make your actual birth certificate (the one that was made at the time you were actually born) say that you are a female. I guess they would make you a new birth certificate that says your "gender" is female when you could officially be declared due to your sex change. That still isn't your real birth certificate, it is the one they would be making for you after the fact to accommodate for your sex change. You are trying to make your sex match what you see as your gender role (because gender is all about perception socially, right?).
You are taking hormones and considering surgery because of your birth certificate? Seriously.
They edit your birth certificate when you're adopted, so why not for that?
Some of the things GA has done in his marriage (that I've heard of) have been rather douchey, but the sex change thing is IMO an issue of unfortunate self-realization.
I can't comment specifically, but it would make sense if someone was struggling with an inner frustration about their gender (or something equally as significant) to take that out in other ways. I'm sure we've all done it.
Also, GA had thought those feelings had been pushed down. Struggling with inner demons, probably feeling unable to broach the subject with Ren until 'he' felt sure that it was unavoidable would be another strain. That would cause a lot of frustration and anxiety, which of course impacts on close relationships, regardless of the issue.
*nod* Perhaps, but I won't rescind my statement. I think GA's innder turmoil over gender 'excuses' changing his/her sex even if his/her wife is a straight woman- the choice belongs to GA, transgenderism is something that runs quite deep and to ask GA to ignore something so intergral to GA's sense of self is, I think, taking the peanut gallery far beyond its limits- it's a deeply personal thing only GA can decide. (Similarly, the awful situation that places Ren in, as well as what it does to their marriage, is, I think, a hell of a thing to judge from the outside, especially if it's something you've not experienced yourself, which I have yet to hear any member say they have).
Being transgender does not, however, excuse being an inconsiderate douche in the name of (or under the guise of/with the excuse of) self-exploration, which, IMO, also occured.