When someone says, "a lot of guys just don't find black chicks attractive," that's just plain old racist, aside from being totally irrelevant, since just as many don't find white chicks hot.
When you say, "a lot of lesbians won't find MtF's* attractive," first off, how the heck should you know? Second, is your problem with tall women (because you're short) or with women who look masculine (because you are into feminine women) or is it just plain old transphobia? Because it has to be one. If it's any of the first two, so be it. I'm happy being half a foot taller than you, and my girlfriend is only an inch shorter, and I like that we pretty much the same height, and she thinks I'm cute and I think she's cute, so everyone else can shove it
But if you say that because of your transphobia, get over it: Quit internalizing the negative images of trans people from the larger society and try to change those images.
What on earth does any of that have to do with this topic anyway? How does that have any bearing on whether someone is a lesbian or straight? Wouldn't the same argument apply if the topic were. "why am I a m2f straight girl?" Do you just have a problem with lesbians in general?
Also, based on my sample size of the handful of trans lesbians I've known or am, we seem to be getting plenty of action. I've had plenty more romantic possibilities opening up in the short time since I started living as a woman than I ever had before. You are totally wrong about those percentages too, and the notion that men are more likely to be "flexible," as you put it. Quite the contrary. I know lots more women who like to "taste the rainbow" than men. Lots and lots and lots more. As to the "body mod" statement, girls I know who have dated trans women have been rather pleased with the "permanent strap-on."
But thanks for playing. Better luck next time.
* Allow me to express my hatred for that terminology, "MtF" or "M2F" or whatever; I'm not an acronym, thank you. I'm a woman. If you must specify that I'm trans, you can say I'm a trans woman.