I was running a windows XP system from 2007 at home until a few months ago. The push to upgrade came finally cam from not having a reliable pdf reader for some pdfs and the fact the last browser still getting security upgrades for XP, firefox, was no longer going to be supported this September. A side benefit to upgrading is now I can buy a modern color laser printer and get out from under the expensive HP ink nightmare.
The computer is now running Linux Mint just fine.