I don't agree that they are a waste of money!
I keep them on all my appliances and have used them many times. Most recently I had to have the icemaker fixed for the third time. Each time they (Sears) come out, no questions aaked and put in a new one.
I have my washer covered under my Home Warranty. The motor burned out on my Bosch washer when it was five years old. I waited 2 weeks for the motor that was on back order. Istead of making me wait any longer, they sent me a check for $1198 to replace it with a new machine. And let me dispose of the machine so you know how I handled that.
I paid about $80 for the warranty on the frig and certainly got my money out of that. The home warranty costs me about $600 per year. I am on year two and have used it for the washer as noted above, my garage door opener, and twice for a plumbing issue. We have a problem with two bathtubs draining slowly, they are coming out this week to take care of that.
I carried one on the old house and had to replace the furnce at no cost and had both Central Air units serviced. I really think they are well worth the money.