I had a nice little Kensington mouse that was comfy, had two thumb-buttons, had a good scroll wheel, and survived at least a decade of heavy use. It was boring and reliable. I only stopped using it because the primary button finally became unreliable through wear.

I replaced it with the only wired two-extra-thumb-buttons mouse I could find, a fancy-ass Corsair "Dark Core RGB Pro SE". It's somewhat uncomfortable (for my kind of grip). It installs some system service that swells to well over a gigabyte of RAM. Within half a year, the scroll wheel has developed an amusing issue where each tick of the scroll wheel will sometimes scroll in the opposite direction, anywhere from once in a while to nearly half the time.

But you know, at least all the lights are controllable! Except the super bright green one right on top.

I really want my boring mouse back.