Whether to buy AppleCare is, of course, a personal decision. if you are comfortable with replacing parts that fail yourself then you might want to skip AppleCare. But if you are like me and don't like getting under the hood of a laptop, AppleCare is the way to go, it seems to me.
I had NEVER bought any kind of extended warranty on any piece of electronics I had bought until I got my Powerbook G4, seven years ago. I immediately realized that I didn't want to work on it myself and that Apple replacement parts were startlingly expensive. Added to that was the factor that unlimited telephone Apple telephone support is included with AppleCare. I have found that if I explain my problem carefully enough to get bounced up to a second level technical specialist, I will almost always be advised by somebody who knows his business. I bought AppleCare on my MBP when I got it a couple of years ago. At the time I bought it, I also got an Apple TV, Time Capsule, and a couple of Airport Express units. Thus, it seemed as if the price was right.
AppleCare paid further dividends last month, when the MBP's logic board failed. I understand that it is an $800 part so not having to pay for it was a big relief.