This is an extremely detailed report on all the technical variables that are relevant to the plague of prematurely 'failing' OMRON switches on modern PC mice that more and more users have experienced lately, like the popular Logitech gaming mice (and other manufacturers too): this is NOT an attack on brands and manufacturers, but I have to talk BLUNTLY in order to get to the root of the problem, so it may come across as harsh at times. If anything, it shows that some of these parts are 'too good' and we just have to tweak the designs to get better life and performance.
For example: I show why the D2FC-F-K 50M switch is not the best choice for some modern mice until they 'fix' their circuitry, but that does not mean that it would not work very well for slightly older mice, etc, etc. I touch on bounce, chatter, polling rate, wear, logic voltage, switch current, general vs microcurrent-rated switches, firmware, drivers, materials tech, usage, ratings, etc.