Interesting experiences!
I picked up a couple of 4 year old Win 7 computers from a school whose board considers it less expensive to keep new ones. I updated those two with new hard drives and to the free Win 10.
My family and I actually use older win XP systems, also discards. There are some minor problems showing up. I had to give up my old Eudoora email client due to security certificates for it being too old. And XP security is not good enough for downloading updates for my GPS or submitting my tax returns (there is a workaround for that). No doubt there will be other problems as other sites stop supporting XP.
