What I'm tired of is the insanity defense.
Interestingly, insanity is a legal term, not a medical diagnosis. With that, about 1 in 25 people is a sociopath - have a nice day.
DSM-IV Definition
Antisocial personality disorder is characterized by a lack of regard for the moral or legal standards in the local culture. There is a marked inability to get along with others or abide by societal rules. Individuals with this disorder are sometimes called psychopaths or sociopaths.
Diagnostic Criteria (DSM-IV)
1. Since the age of fifteen there has been a disregard for and violation of the right's of others, those right's considered normal by the local culture, as indicated by at least three of the following:
A. Repeated acts that could lead to arrest.
B. Conning for pleasure or profit, repeated lying, or the use of aliases.
C. Failure to plan ahead or being impulsive.
D. Repeated assaults on others.
E. Reckless when it comes to their or others safety.
F. Poor work behavior or failure to honor financial obligations.
G. Rationalizing the pain they inflict on others.
2. At least eighteen years in age.
3. Evidence of a Conduct Disorder, with its onset before the age of fifteen.
4. Symptoms not due to another mental disorder.