Thanks to campanella for the research link list - very well-thought out and detailed post, and I appreciate that.
I want to clarify that in my case this is not the only, or even a driving factor in my trans identity. I have always had body dysphoria (since puberty, but with many moments prior to that), which I have suppressed for years and years. Many of the reasons I have been suppressing it have been social, and only in the past year have I been blessed to be surrounded with people who send the message "it's okay to be yourself." It is in this time that I have become a feminist (I always believed in equality but I didn't always understand inequality).
I feel like it's somewhat appropriate that after I suppressed myself for social reasons (lack of finances, lack of social and emotional support, benefits provided by living as female such as my partner's affections, etc) ... I ended up reawakening my inner self after changing my social surroundings. Being around transguys (for the first time in my life!) and feminists and other people who believe that an individual's identity is important has had me, for the first time in years, caring about my identity.
I'm 25 and still in college - sort of an arrested development thing, I guess. I needed those extra years to work because I couldn't afford to live. And because sometimes I didn't always want to.
For years, I felt that everything I felt about my identity was impossible, and so I decided to live for other people. My chosen career path is in social services, my body is something I make available to my partner, my dreams have always been to make other people's lives better, to help them be happy. I had forgotten about making myself happy. I had forgotten about any of that.
While I am questioning myself and my motivations at this time, I feel like I already know the answers. I feel like I am afraid to admit them to myself because I've been hiding so long. And because my partner, who knows everything (except that I am on this forum), asked me if I'm completely certain I am not just responding to social constructs.
One last time, for his benefit, I decided to consider that. But it doesn't seem to be the case.
I think I might throw that question back at him with regard to either staying or not staying in a relationship with me if I transition.