Some forms of violence are worse than others, just as locomotives are thicker than wheelbarrows. Only comic-book villains are connoisseurs of violence. Real-life villains commit it while thinking it’s a form of love. But there are exceptions, such as martial combat and self-defense. I’m just confused about the insanity defense. Abuse can drive a person crazy. You’d need to be crazy to commit a cold-blooded murder. To inquire about a motive might be crazy.