Except that these devices are not made to last more then a few years. Simply the action of turning them on and off creates stresses in the connection points where all the wires and circuits are merged together. The constant expansion of heat and cold create microscopic cracks that wear on the device, cause weird things like the cellular antenna to stop picking up a signal as well, the connecters to fail, etc etc. I would really love it if these products were made to last forever but there's a really good reason they only have a 1 year warranty. ;(