Your computers don't really count as they are anything but normal.

My wife is running a 7 or 8 year old Apple laptop, the least powerful one they made at the time, and it's running the latest release. 7 or 8 years is a LONG time in the computer world. It has not been my experience that Apple orphans stuff until it can't keep up. I did have (think I still may somewhere) a first or second gen iPad. Yes, that was eventually orphaned, but then it was old and woefully underpowered for the new stuff, so not a big deal. It still ran (runs) the last iOS that it ran.

Running 11 on one of my boxes before upgrading the others.

No issues.

Not a lot of overtly noticeable improvements but the UI is cleaner.

Apple's "end of life" for the OS is longer than MSFT's for Windows.

Apple average is 5 years or longer when the average lifespan of a PC is only 3-5.

Windows, especially 10, EOL is a bit obfuscated.

The major releases EOL in 1-3 years.

And when you consider that Apple maintained OS compatibility through 4 hardware architecture transitions, 68xxx->RISK Power PC->CISC Intel->M1 Silicone will maintaining legacy app support across 2 OS's, Classic Mac OS->.nix OSX, one really can't say Apple do not go above and beyond to keep older hardware viable.

I checked my Windows 10 system updates and I have the necessary hardware to run Windows 11, however the upgrade option isn’t there yet.

I guess they are rolling it out in phases. My OS came with a new computer so I am confident I will qualify for the free upgrade.

I don’t want to be left behind with an OS that is no longer supported like I was with XP.

It would be interesting to find out how many active licenses for Win 10 are active across the world. They are indeed doing a rolling update and the bandwidth needed to upgrade millions of computers all at once would be staggering.

My 10 year old computer only has a i5 CPU. Unless I replace the CPU with a faster one, it can't be upgraded to 11. I only use it for a couple of really old programs that have a nice features, and would cost the price of a nice Boxster S to upgrade to the new versions.

I did an I5 laptop a couple weeks ago. Pretty easy.

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I do not like 11...
Lots of explorer crashes, lots of USB weirdness (drive mounts and dismounts 1x/sec), the start menu is all messed up and not customizable enough, no more tiles or apps menu (w/o an extra click), etc.. Aside from UI, it's fine and apps work, but why do they reinvent the interface every time ?

Seems to me MS gargled icons and spat them out in new locations, for no actual benefit whatsoever. I cannot think of anything 11 does better and made me go "ooh, clever"... More like "whereTF is this located now?".

I would vote Win10 - lots of stuff has no good drivers for 11 yet.
At the very least I'd wait till they release a 11.1 - with fixed start menu and taskbar - lots of unhappy professionals out there, it messes up a lot of enterprise environments that standardized on some UI. I know we aren't switching until Win10 is given the last rites, it would destroy the hospital app single sign on apps.