I replaced my first G502 only a few weeks ago after many years of service. The left click was starting to be a wee bit unreliable, but the real reason for repla

I replaced my first G502 only a few weeks ago after many years of service. The left click was starting to be a wee bit unreliable, but the real reason for replacing it is that, AFAICT, my sweat was slowly but inexorably corroding the metal scroll wheel, and it was at the point where it was really really uncomfortable to scroll. It's been such an indefatigable workhorse that I bought a couple more G502 along the way — one for use on the go with my laptop, one to keep at the office for work.