I have a Sandy Bridge machine still serving me dutifully as a sub computer to my main computer, so I know all about old hardware never really dying from impracticality especially since 2011 onwards. Hell, I still have a Pentium 4 machine running XP for the stuff that needs/wants that too.
As I already said, if you want to keep running Windows 10 (or 7, or XP) it's perfectly fine. Tell everyone who screams "SECURITY!" at you to screw off, they all want to sell you something.
Even if you do upgrade to a new machine, why does someone have to throw away their old one? Keep it as a sub computer, or give it a new role in your life. Windows 11 mandates TPM2 and SecureBoot, but it doesn't mandate throwing your old machine in the trash.
I think we're mostly in agreement (?) but (1) XP isn't really practical nowadays, and (2) as to "why does someone have to throw away their old one" - well you don't have to, but having your files haphazardly spread/duplicated across N machines is quite a pain for most people.
As I already said, if you want to keep running Windows 10 (or 7, or XP) it's perfectly fine. Tell everyone who screams "SECURITY!" at you to screw off, they all want to sell you something.
Even if you do upgrade to a new machine, why does someone have to throw away their old one? Keep it as a sub computer, or give it a new role in your life. Windows 11 mandates TPM2 and SecureBoot, but it doesn't mandate throwing your old machine in the trash.