We expect things like a computer dieing after only 4 years as being "par for the course" with consumer electronics, but there is no technical reason we should have to. The only technically valid reason to replace something that new is for higher performance, as we continue to follow Moore's Law. But we demand the cheapest electronics China can build for us, use it for awhile, then throw it on a toxic slag heap in a third world country, and just buy a new one. The Earth can only handle so much of that, and it is already saying "enough!".