Thank you all for your responses!
> I never had the overwhelming desire for SRS. To me it is not what is in my panties that counts. Passing and being accepted generally as a woman is what does.
This is very useful!
I guess I was stuck up on the label woman. For perhaps thousands of reasons, I was unwilling to see myself as a woman as long as I still have a penis. It was my mental block. However, recognizing that all tissue which forms female organs are bio-identical to the tissue that forms the male ones, I see that it was merely hormones in the womb that resulted in one set of organs or the other. It's a bit comforting to think about it this way.
In addition, I cannot appear more feminine, which I want to, without increasing my estrogen dose. Specifically I'm talking about hair growing on my head. Whenever I've been on the doses of estrogen that brought my blood estrogen to female ovulation levels, I had luscious hair. However, those levels depress my sexuality. I could not see myself as a woman without being as feminine as I biologically can with higher estrogen levels.
And finally, I was previously unwilling to accept that my gender identity was predominantly a social matter with a social root cause. If passing and being accepted as a woman were sufficient for me, I felt that I would be denying my biological need to be female. This has been very difficult for me to admit that I was wrong. However, I am coming to the realization that I may not be trans in the biological sense, in terms of needing my entire body to be female. I only need others to believe I'm female and treat me accordingly and allow me to exercise all my rights as female. This is still hard to accept for me, but I'm getting better to being more open to it.
I'm probably not trans at all. I don't know. However, I'm worrying less about which label applies to me.
Meeting a new therapist who has no experience with gender for a lot of sessions in the last few days has really helped! His fresh perspective and logical reasoning has been fantastic! I guess I'm also more open to the idea that I may not be trans in the traditional sense, which helped too.
> Your sexual function seems very important to you and that is a reasonable concern.
Yes, this has been the stumbling block for me. I was caught between my sexuality and my need to be feminine. To your point, I probably cannot give up on either and I will need to balance out the two to feel right.
This has been a very valuable exploration for me. I don't entirely know where I go from here. I already live as a woman and I pass well too. I'm very happy with the social aspect of my life, except with dating but that's another issue. I will continue where I'm at staying steady with the estrogen dose which maintains my balance, until I feel I need to make any huge changes. And I'll ignore the feeling which estrogen gives me to up my dose and get SRS because I know that's a dead end for my sexuality as I know it.