I would choose to have one if I had the metabolism for it. Not because of body image problems - I'm really thin, and am told I look hypermuscled and scary - but more because of issues with my body as female and fertile.
I have a problem with being female, because I feel a slave to whatever my reproductive system happens to be doing. I sometimes feel that I'd like to not eat anything just to spite biology, to reclaim my body as my own and not as a volatile set of sex glands and organs, a baby machine owned and controlled by nature.
I can never actually not eat though. I have to eat plenty 'cause my metabolism is so fast.
_________________
'You're so cold, but you feel alive
Lay your hands on me, one last time' (Breaking Benjamin)