There's the difference, you have a "collection" that you are rotating. I on the other hand don't rotate mice, I just eventually get a new one. I used to just get a new mouse when the left click went, but now I just replace the microswitch instead. All my regular use, gaming, and porn put a toll on the left click. But I have never had a Cherry microswitch fail on me yet. I should bring some of those mice back to life and sell them now, but that's probably not gonna happen anytime soon.