Based on thinking about what you wrote, I have the following real question (not sarcasm or making a point): if your homeowner's insurance company gave you a $100/year break if you bought a certified "tiger rock" for $300 (that keeps tigers from breaking into your home) would you (actually) buy one? (You can substitute anything else that is obviously non-working, you can assume that corruption leads the policy - insurance actuary in cahoots with tiger rock supplier, whatever.) point is I'm curious if you would do it if absolutely non-working. (To the point where even sale of it is kind of offensive.)