If the product is deemed DOA by Apple Care TechnicalSupport more than 30 calendar days after the invoice date, Apple's standardproduct warranty will apply.
See AppleCare+ Terms and Conditions for complete product details
Personally, Apple devices have always been very reliable -- in my experience, that is. Their return policy is also very accommodating. So even though I own a million Apple products, I've never purchased AppleCare.
Read frequently asked questions about AppleCare support products.
I have never owned Apple Care on any product and never will. It's a big money maker for the guy who sells you the computer. That's why you get those pathetic looks when you refuse it.
See AppleCare+ Terms and Conditions for complete product details.