That is one of those dammed if you do, and dammed if you don't questions. If nothing goes wrong, then you get upset for the waste of the money, but if you don't buy extended warranty and something goes wrong you curse yourself for not buying it.
Also, shop around between the various Honda dealerships. Honda sets the price of the extended warranty for the various models, and the dealership gets a set percentage amount for the dealership profit. Some dealerships will discount their profit amounts, so shop around!