If you're really that moved (and you really shouldn't be surprised after the Foxconn reveal), get a Pinebook and start playing with Linux Mint and go from there. Support Open hardware and Open source software on the side while still working with your old hardware until you realize that at this point the Linux ecosystem and its various distros can do just about everything Windows and Mac could, this isn't the 90s anymore.
I will say, though that if you do video editing that can be a hard one as even I still revert back to a Windows box for that, unfortunately. And I went all-in on Linux after XP in 2004ish.