Carl von LesquereuxI seem to have bad luck with computer mice. Whether they're cheap or expensive, wired or wireless, simple or with many buttons, Bluetooth or 2.4 GHz, from well-known brands or from some random Chinese vendor, they always start malfunctioning after 2 years or less.
No, I don't treat them roughly, I don't throw them (or play football with them). They just start dying after that time. Weird.