My home desktop is still XP - old machine that can't be upgraded. I'm just biding time until it dies. I really only use it to print things from since my laptop(s) are Macs and they don't have a printer driver for my printer. So, I email things to myself to print. Really a pain, but I don't print that much.

Also used for things like going online to print a boarding pass. I still use it to keep my personal accounting spreadsheet but REALLY need to move that over before it crashes someday.

The printer is a cheap POS so I really just need to invest in a wireless printer with a Mac driver and I'd be pretty much good to go.

The other thing is that Mrs. Milepig needs a wacky piece of software to access her work files (including email, they don't even have any webmail system) and we've never been able to find anything that will work on a Mac, so she uses the desktop when she's at home. A royal pain.