I am not so very certain that extended service contracts are such a bad investment. I did not get one on the 1986 Escort that I bought and I wound up replacing the valve seals and the clutch as well as rebuilding the a/c twice. On my next car, a 1989 Plymouth Voyager with a 2.5 liter turbocharged engine and a 5-speed manual transmission, I bught the 70,000 mile warranty and had no problem with the engine or transmission until about 105,000 miles when the turbocharger went bad and needed replacement. I was advised by the Chrysler-Plymouth dealer as well as by the Goodyear dealer and two other mechanics that I consulted that turbos were consumable items that needed periodic replacement no matter how well you treated them, so I replaced it and then drove the car another 60-70 thousand miles with no other engine problems before I traded it on a 1998 Dodge Caravan with a 3.0 liter Mitsubishi SOHC V-6. I bought a 70,000 extended warranty on the Dodge and, at about 37,000, the valve seals went bad and needed replacing. The total bill was over $5,000, of which I paid about $250, IIRC. That more than paid for both of the extended warranty contracts.
When I bought my 2002 Ford Focus, I also bought an extended warranty contract on it and I also bought the extended warranty on the 2005 Mazda6 SportWagon that we bought last January. So far, I have not needed to use either one but if I do, it will assuredly pay for itself.