K.H.
If you never buy a warranty for any product you will be ahead of the game in the long run. However, as you mention, people are not likely to have a chunk of money to pay for repairs. So it is a form of a forced savings plan, but the warranty company is making money because you pay in more than they pay out (over the long run). If you can force yourself to put aside the same amount of money into a 'home repairs' account, you can insure yourself.