LOL I've rolled so long without worrying about it that I forget about the warranty.
I have much the same problem. Only time I've ever had hardware problems was a MBA last year - the trackpad didn't work well right out of the box. Took it to apple store, they replaced the bottom, still didn't work, so I decided to send it back and bought a MBP.
Other than that I've never needed to use warranty and never buy AppleCare