I made my wife promise me before we got married that she would never kill me for the insurance money and that she would never leave me in the used husband lot. Unfortunately I got left in the used husband lot but it was God's decision, not hers.
It's rough to be widowed, especially at an age when you do not really anticipate it.
I certainly wouldn't kill my husband for the insurance money, but when I pay the premium, he always asks, "Am I still worth more dead than alive?" and I cheerfully answer, "Yup!"