Thoughts on purchasing an Apple Care warranty for a new Macbook?

I'm curious as to what Apple Macbook owners (Air or Pro) have to say about the necessity of purchasing an Apple Care warranty for an additional $250.

I've never owned an Apple laptop (or a PC laptop for that matter), but I have managed to trouble-shoot my refurbished Dell Dimension 8400 since I purchased it almost 10 years ago. I'm looking to replace that aging machine and the price of the warranty could be the difference between one Macbook vs another.