FWIW, I'm 62 (where did the time go??) and just starting HRT. So if you'd rather see the glass as half full, you've got womanhood to look forward to in the prime of your life.
I've sometimes wondered if I would have felt happier and/or more like myself if I'd been born a girl like my parents wanted. But I look at my little sister (well, she'll always be my "baby" sister to me), and I think that, for all of the misery in my life, I got off better than she did. As the third boy, I got more or less ignored which, while painful, at least gave me some room to have an independent self. (One that was wanting in every respect worth thinking about, but still, my own.) My sister did not get that. Only now, at age 53, 6 years after our mother died, has she gotten to the point of having a boyfriend (now fiance.) I hope that she's finally finding room for her to find herself.
So, there's a part of me that wishes I had had a girlhood -- but not if it would mean being in the family I grew up in.