I wish we did better when it came to software support. Hardware can last a long time if some effort is made on the software side. The 6700k isn't supported by Windows 11, but not for any good reasons. It's still got the performance to do quite a lot.

Bulldozer (and thus Piledriver) was stillborn unless you were a diehard AMD fan or an overclocker, so I don't think it's helpful to lump in here.

I'd still use an iPhone SE (released the same year as the 6s) if the battery could be easily replaced and iOS still supported it. I don't do anything on my phone that needs significant performance anyway.

I still keep my 2012 Macbook Pro around as a backup machine if something happens to my main machines, and every time I drag it out to check up on it, it still works great. It stopped getting any significant MacOS updates in 2022, but Linux still gets updates.

The GTX 1080 (Ti) still works for the vast majority of games in 1080p. The only thing that would really make it obsolete is driver issues.