Well, the Powermac 7500 lasted from 1995 to 2002 with assorted upgrades, including the CPU.
The 2002 Quicksilver is still working and gets used occasionally. It was the main machine from 2002 until 2009.
The 2009 Mini was the main machine until 2014 when work requirements forced a change to Windows.
That machine is running (OK leisurely walking

) Linux at the moment so I can still get it online for web lookups in the shop, and as a music player.
In 2019 work was no longer an issue, so the 'Blows box was replaced with a built from parts Linux machine. The current Linux install is supported until 2027.
I have picked up two used 2014 Mini's. One is in the stereo cabinet for movies and music, the other is the fileserver. They both run Monterey. The server may get converted to Linux next year if I'm brave enough to wade into Samba, I haven't decided on what to do with the stereo cabinet box.
The windows machine was passed down to the kid, but it went poof (literally) in 2022. It's been replaced with a 2018 vintage HP desktop with a truly ancient video card that can play Minecraft but can not run without turning off trusted boot or some such feature.