I already wake up sticky and dirty - the female organs are way messier than male ones can possibly dream of being in the worst throes of pubescent obnoxiousness.
I don't care all that much about being fertile as male, since I know I wouldn't be able to reproduce with my preferred partners anyway. But I really, really want the correct plumbing. I want to be able to get a ->-bleeped-<- without having to explain my anatomy. I want to get rid of the painful exposed nerve endings in my current genitalia that are supposed to be sealed up and protected inside. I want my balls - I've been missing them ever since I can remember. I want to be able to ejaculate.
I can't imagine, as a guy, not wanting those things. I can't imagine being OK with the female parts. Just on a purely physical level, they feel wrong to me. I recognize that some trans guys feel differently, but i can't pretend to understand.