I shy away from most extended warranties except for these front loading washers. Not dryers but washers have very expensive and damage prone bearings and structural items. A dryer, they are relatively trouble free. I used the crap out of my wash machine extended warranty and now that it has expired I have gotten good at fixing them myself.
I had to fix my front loader whirlpool duet washer again yesterday. Stupid sock caught between the drum and the outer shell. Sock gets stuck at the water inlet and water pours out of the front. These front loaders suck.
Dryers are so simple.
I've had a Whirlpool Duet for a number of years and until last year when I had to replace the pump it has been trouble free . . . maybe I got lucky . . . and you were unlucky.