I've read countless articles in the 'quality' press, in technology magazines and online. Everyone one of them has said that you should NOT pay for 'extended warranties' and the like.
If an electrical item lasts more than a few months then it will almost certainly last for many years longer. (Electronic components tend to fail fairly quickly or not at all).
Further, if an item goes wrong within the first 6 years of purchase due to an 'inherent fault' (i.e, something which was wrong wqhen you bought it, such as the use of poor quality components or poor workmanship) the retailer must either repair or replace it. (Theoretically, after 6 months from the date of purchase, the purchaser needs to show that the cause of the problem is, indeed, an 'inherent fault' but simply challenging the retailer to suggest something else can often be all that's required).