Extended warranties are a crap shoot at best! All you have to do is have your air conditioner crap out and it pretty much pays for itself, but otherwise, you can be just throwing your money out the window!
Myself, I have bought the extended warranty on the last 3 new vehicles, mainly because I'm getting old and don't feel like fixing them anymore. On one car it cost me money, on another, I recouped maybe a little over a half of the cost, and another it was a good thing I had it as the combined repair costs were around double what I paid for the extended warranty.
The cost has been continually rising, the first one I bought over 10 years ago ran me just under a thousand, my current one ran closer to two thousand...