I actually liked the DeathAdder and have had almost 3 of them. I just mainly meant to knock their build quality.
But that said, the lifespan of all mice is kinda bullshit. I haven't had single mouse last more than a year in almost a decade. Either the left click starts getting glitchy or the mousewheel's encoder starts to go. I've used Logitech, Razer, Microsoft, Xtrfy. My Xtrfy M42 wireless's left click is starting to get inconsistent now (holding LMB will randomly release, and the microswitch is bouncing on click).
I tried to repair my DeathAdder but I had the soldering iron too hot and I destroyed the contact pad under the microswitch. π I tried to take some solder mask off the trace and bodge it but I made such a mess that I just gave up on it. With better desoldering technique, it would have been straightforward. Lesson learned!