I had a LIO once ask me, "With all the guns you own, would you ever shoot anyone?"  I replied, "I've thought that question over many times, and I keep coming up with the same conclusion.  If anyone seriously provoked me, and weren't an immediate and clear danger to my life or limb, I would want to lay hands on them.  A gun is just too impersonal."  Only sociopaths and psychos will escalate a personal grievance into a murder.