Insanity Defense

I usually don't delve into the abyss that is the law, but some things are simply too irritating to be left without comment.  One of those things is the insanity defense, which I realize is rarely used, but is usually found in the most heinous cases.  Most of these cases involve someone murdering someone else.  Murder is not an easy thing and usually takes some physical and mental effort to accomplish the task.  I think of people who are insane as people who think their committing murder by urinating on the lawn.  People who can go through the actions necessary to commit their particular crime may be insane but they knew what they were doing or they wouldn't have succeeded.  There is some cognition of their act and their surroundings or they would fail miserably.  They may not know right from wrong.  Most criminals don't, or they are like politicians and actually believe their own propaganda wherein they can act on their dubious world view.  In either case, they are responsible for their behavior.  Depending on the crime, they need to be put safely away from society before they lose their mind again.  There can be no abdication of responsibility because you have bad brain chemicals.