I haven't needed AppleCare since my original iPhone developed a bubble under the screen 22 months after purchase. I stopped buying it for iDevices a long time ago. The widespread issues and various "gates" you hear about are always overblown. Even so, they always occur right from launch. As such AppleCare doesn't really gain you anything in those cases.
With Macs I think its a different story, since there are more ways for things to go wrong. There have been several instances of graphics cards and screens going bad once the original warranty expires. Even then, if it's wide-spread enough Apple will offer free repairs for specific issues out of warranty. I once had the GPU replaced for free on my original Intel Core Duo iMac almost 10 years after I bought it due to a known issue that was covered.
With Macs I think its a different story, since there are more ways for things to go wrong. There have been several instances of graphics cards and screens going bad once the original warranty expires. Even then, if it's wide-spread enough Apple will offer free repairs for specific issues out of warranty. I once had the GPU replaced for free on my original Intel Core Duo iMac almost 10 years after I bought it due to a known issue that was covered.