I'm sorry.. I don't know, maybe it's caused by fact I ain't native to english, but I have some problems to understand your words.. Yes, devices break due to wear or if you prefer "usage".. That's how world works.. You ever herd about "analog drift"? Same as switches on consoles, circuits, moving and not moving parts. Everything what is doing work of some sort may broke down. And we only talk about predicted causes that are effect of using devices as desifned, there are always things that designer never thought of (furious gamer?), and random occurences like transformator faliure or electrical network instabilities that results with damages.. Overvoltages are pretty popular, not mentioning users that don't know a thing about their devices or technical aspect of it (guess you heard about people that put in device totally random chargers or power supplies, from totally different devices, because "plug fitted", and ended up with not working or fried device).. Most of them might be repaired.. But knowing where goes peoples knowleadge.. well.. You have to know specialists to repair som devics.