Old People

Don't mess with us old people! As the years pass, "Life without parole" doesn't quite seem as much of a deterrent!
That's a bit like the scene in Fried Green Tomatoes when Kathy Bates was willing to crash into another car that "stole" her parking space "because she is old and has more auto insurance."

My boss had a sign behind his desk that read "Old age and treachery will overcome youth and skill..."