Whenever I've heard a suggestion that I should just live as a feminine guy, it just makes me feel sick. Even in a world where no gender stereotypes existed, I wouldn't want to be male. I'd rather not live the rest of my life with a masculine face, body hair, a flat chest, male fat distribution, etc. My transition has nothing to do with social roles and everything to do with my body.
Before I transitioned, I actually had problems recognizing myself in the mirror. It wasn't until I'd been on hormones for half a year that I could actually remember my face.
Also, my own hobbies and interests are more androgynous than anything else, but I probably lean towards being more gender non-conforming as a girl than as a guy.
Yeah, it's long. It's worth it!