Yeah I'm done with your shit here, guys. I realize I sound like an angry idiot, but it has to be said...
Despite carefully designing pretty good peripherals, you decide to use the world's shittiest microswitches, from OMRON, with flimsiest metal contacts and springs I have ever seen, meaning that eventually, the user has to open up the mouse, tinker the little switch enclosures open, and then adjust the tiny metal plates that have become too weak to enable continuous contact, AKA 'click-dragging'. And eventually, after a couple of these procedures, the metal piece snaps off, and I find it was soldered onto the switch (despite older models of the same switch sliding in and out of a frame) and now the whole thing is broken, since I don't have an iron or anything (I'm not an electrical engineer or even a hobbyist) and that M-500 I was so happy to use (even though both the right and left buttons began to fail all the time), is a write-off because I'm not going to buy and solder new microswitches to replace the shitty, terrible ones you so casually throw into your mice. Oh and they're situated in such a finnicky little manner it's almost as if you expect them to work forever and people will never have to do home repairs on them. If you used your own products you would see differently. Fuck you very much.
After this heartbreak, I will never buy another Logitech mouse. I will return to bargain mice and terrible scroll wheels and bad ergonomics, and I will lament the 40 dollar mouse that lasted just a bit longer than two years when it is traveling to the dump with the rest of the garbage - compromised as it was by a tiny and central component. Months of annoyance and little procedures and really, they have no excuse because far shittier mice ($5-10 bargains) have lasted so much longer, with contacts that didn't fail until the actual plastic bits gave out... but sure, Logitech'll keep making pretty sweet, $40 dollar mice with 5 cent components, because quality means higher than average prices and worse than average components. It's not rocket science to test how many millions of times a microswitch can operate before failure, and it's simple logic (tech logic even) to ensure they can last – after all, nobody is paying that much for a mouse who is going to use it only casually.
While I'm at it, in an era of optical mice that use lasers instead of the ancient system of balls in a rolling enclosure, why have the mechanics of the switches not changed at all? I get that there is a bottom line... you know that's basically all that matters, come to think of it. Still I don't think most companies intentionally hamstring their products so blatantly... years of complaints and no specific response says plenty about your business.
People, if you use a mouse more than an hour a day, and you need it to be good, and you want it to last, just don't make it a Logitech and it should keep working for at least four years. Theirs was the first mouse I'd ever used where the buttons failed in such an annoying and prompt manner, only to precipitate such a discouraging incident where I am forced to play technician (this way it can be claimed that my actions caused the product to stop working as intended, disregarding the fact that the product no longer functioning as intended caused my actions). In fact just use the mouse you got with the that tower you bought in the mid-2000s, despite being basically free it will outlast a 'quality, ergonomically sound, easy to use' Logitech mouse. Or just get a used ball mouse out of the garbage dump - it'll probably still work and when you're done with it the little ball can be used as a projectile.
Most peripherals in the computer world are shit. The more they cost - the dumber the buyer. That seems to be the law all the big players operate by. You either buy really cheap things or really expensive things, and everything in the middle is a big risk... like the $40 Logitech M-500, which will stop clicking correctly long before your computer is obsolete, and which has probably the best scroll wheel of all time, which you can actually take out of the old mouse and, if you know enough or intend to learn, jury rig onto another mouse.
So ends the saga of the computer mouse.