Two systems still with XP, but I rarely use them, I went to win7 in 2010. A faithful desktop that I should do a fresh install on that is now for old PC games and I have a nine year old Dell laptop.
The laptop still works well. I replaced the dead 40gb HD awhlie back with a 120gb drive, when you could still buy IDE ones fairly easily. If that dies, I supposed I could try to fit in a sata drive with a converter... an ssd perhaps lol. XP is updated, backed up and still works fairly well. Odds are I will install LXLE or Bodhi linux on it in a dual boot and use that instead of XP.
Note to those with Pentium/Celeron M chips in XP laptops, use linux distros that still come with Non PAE requirements if you have issues with installing modern versions from the last 2 years or so. Ubuntu apparently can work but it requires and bunch of steps that I can't be bothered with.