networkn:
That is actually not necessarily true. An Extended warranty may give you protection above and beyond what the CGA does. For example, we bought a kettle, they threw in the extra warranty free. It gives us immediate replacement of a suitable or better device on the spot. We have already used this once, when we had an issue with it. We took it back, they gave us another on the spot. The entire process took under 5 minutes. They were entitled to take it and test it which would have left us with no kettle for a few days at least.
What an extended warranty is not, is a replacement of your basic rights under law. This doesn't mean they don't have value. They are NOT allowed to represent an extended warranty as performing the same functions as your basic consumer rights.
Extended warranties may also cover your device for a longer period than even consumer says it should be covered.
A note, extended warranties may only be able to be used for a replacement once. I ran into that way back in the days of Palm PDAs.