Honestly, it's just a given that in almost all societies around the world, girls are the ones who, 99% of the time, are treated with more delicacy, politeness, and romantic emotions/physical contact, and society obviously has different expectations of women than men, mainly in the career industry and when it comes to what is "supposed" to cause that person pain (ex. society doesn't react as badly when a man gets raped). To me, all of these things are positives that my innate personality requires; I am a delicate, health-challenged person who likes being the flower in the relationship, the person that receives cuddling, care, and a man to look after me. I did not have a loving family growing up; I have to be the dependent one, not the brawny man who has to take care of the girl that I actually want to be.
You could say "Well, a gay relationship could work like that, and you could be the bottom." - Yes, I identified as gay once, and I was most definately the bottom, but gay men are never, ever totally straight acting. The only guys I have truly ever fallen in love with are the straight men who, because they like females and female identity, are naturally more controlling, demanding, hardworking, and independant. Gay guys, no matter how straight they want to act, all end up being a bunch of flowers, and many of them are plain ugly. I don't really find anything attractive about gay culture and I've never wanted to be a part of it. I don't want to settle with being gay just so that I can find a man. I want straight men (and society) to see me as a woman. It means I definatly want to be a stealth Trans no matter what it takes.
Also, and this breaches into popularity and beauty, but upon transitioning into a woman, I also want to be very pretty, and in that respect, I want to be treated with instant respect, admiration, and sexual arousal by society at large, as I do have a that personality I believe deserves an attractive outside representation. I also want to be an actress and writer, something that I can only confidently do with a female appearance; I do not want to be a man to the media world or to play manly, burly roles that do not at all reflect my personality and soul. I simply wouldn't be able to do this without transitioning, no professional producer or casting director would hire me; many have already fired me.