Well Pathfinder 2 is about to land. They had a good run of 10 years. Old D&D tended to last over a decade in print and 3.X had active support for 19 years a D&D record although on paper Basic also lasted 19 years but was more like 17 with several reboots.
My personal record is BECMI 2 years, 2E 5 years, 3.X/Pathfinder 12 years, 2 years OSR, 5 years of 5E. 12 years of 3.X but it was also 3 takes on it to keep it fresh. Early Pathfinder was more 3.5 errata. We played a bit of 1E and 4E but they didn't stick as I don't DM 1E and 4E didn't stick.
Anyway I kind of feel done with 3.X, haven't played it for 5 years, no real desire or nostalgia. 12 years though. The big one is 2E, never really felt done and I fell for the 3E marketing I suppose. In 2000 I was still happy with 2E and played it until 3E landed. 3E was new and shiny though but by 2002 early nostalgia was setting in. 2E art looked better IMHO and the fighter players missed their 2E equivalents. And we figured out haste was busted.
When 4E landed I still wanted 3.5 as I had a heap of books but barely used most of them. 4E arrived to soon, 3.5 was only 5 years old, same age as 5E now.
Getting sick of parts of 5E, can be mitigated by playing more vs DMing. I suspect in 5 years I'll be ready for 6E and are getting to the point I'll play something else on occasion but I think I'll be good for another 3 years at least.