I have had a Logitech G600 and a Corsair Scimitar that have both had issues in the past. The G600 had the switch outright die and the scimitar developed inconsistent scrolling (also super stiff and hard to middle click anyway).
I do a lot of web browsing and RuneScape, which uses the middle mouse button to move the mouse and I tend to rebind the DPI buttons under the wheel to the middle mouse button to compensate.
Oooo, this one actually happened to me. Head on collision with a barrier at 80mph, fell asleep at the wheel after getting out of a 27 day stint in the ICU. Dare To Be Stupid by Weird Al was playing when i collided.