When I first started cutting/burning I quickly switched to areas covered by underwear or swimwear, because I was ill and at the doctor's a lot. Mostly breasts and buttocks. This was just a matter of practicality.

Nowadays the urge to hurt my female areas is mostly because they make me feel vulnerable, they are sensitive and that reminds me of trauma, and I just don't like having them - not because I don't want to be/don't feel like a woman, more that I am asexual and don't really see the use for sexual organs, including breasts.