Remind me never to buy any SSD you put up for sale. For me, it's when I buy a new primary SSD. Other than that, never, unless another hardware upgrade makes things go screwy. But I tend to upgrade the PC in batches of parts these days, rather than one at a time like I did in my yoof, and I buy at the high(er) end, so the desire to upgrade is muted while the experience is good. Yeah my current Linux partition got a clean install when I got my 950 Pro, so that started out on 16.04 LTS, but I rsynced all my shit back in, so I guess it's the same thing given the lack of black magic BS compared to a Windows install with old driver shit and registry crap laying around everywhere. Prior to that, the partition dated back to 8.04 LTS -> 12.04 -> 16.04. Haven't moved to 18.04, but it's on the cards as soon as I have a bit of time.