I am not one of those people who believes I need to buy an extended warranty for every electronic device I buy. However when it comes to Apple Computers like the iMac, MacPro, MacBook, and MacBook Pro, it is in your and your wallet's best interest to buy the Apple Care Warranty. You have the complete protection you need to continue using your computer for at least 3 years without the worry of an expensive repair. Remember batteries are not covered under the Apple Care EXTENDED Warranty.
Also if you are not going to keep the computer for the full three years, make sure you trade it or sell it before the Apple Care Warranty expires. That way the new owner will have some protection until the Warranty Expires.
Best regards,
Michael