In contrast, for patients with fibromyalgia, the sensation increased with each repetition to become a crippling and unbearable pain. Not enough sex offenders have chosen this drastic treatment to allow experts to conclude that castration is suitable therapy. In general, such offenders suffer from profound psychological problems that govern their inappropriate behavior. The theory that hormone levels and excessive sex drive are the causes of sex offenses has been discredited. For example, rape is now viewed as a crime of violence, rather than of sexual appetite.
Sex offenders seem to do better from psychotherapy and intensive counseling.
Nonetheless, some offenders who have chosen castration as a desperate step to control their impulses report feeling better and less prone to obsessive antisocial misbehavior. As you might expect, the legal ramifications of involuntary sterilization of criminals are profound. Even if castration were proved to be medically beneficial, years would elapse before state legislators could pass criminal-sterilization laws.