@Gargron You should see some of the Green Ham Gaming videos, with some simple upgrades (mainly GPU and RAM), older desktops are really worth their bang-for-buck - even if the Coronavirus has slightly messed up pricing of them!
My favourite is "The Incredible i5 Dell"
https://www.youtube.com/watch?v=v-GxfU9Yem0
I only updated my desktop this year, because I tried to buy a desktop as a server and they couldn't fulfil the order. I'm planning on keeping my current one for at least six years.