Pretty hot fantasy, Ann! I lean toward castration more than penectomy, of course. While castration for sex offenders is considered 'humane', taking their cock and their main source of sexual release is way more sinister. Big full balls and just a stump. They would go insane, or take to getting ass drilled for the rest of their life. Suitable for a sick pedophile or rapist.
What I love is your reaction... masturbating to the thought of this stud losing his manhood, and 'helping' him through it.
To Chrysippis... I get your point, though, while a bit extreme, non consensual harming of another human in any way is wrong no matter the gender. As Ann said, this is all fantasy. Nobody sane would act out these in real life. But sick f*uckers who get off on maiming a woman so the whole world can see she's scarred and ruined should have their dicks chopped off.