Lots of stuff still with XP incarnations
I noticed the other week that a lot of UK rail ticket machines still run Windows XP, along side, Bus Station Departure and Arrival Boards, and ATMs. (All of which had failed in some way and were displaying XP error messages, in the case of the London Midland Ticket Machine, it was stuck in a boot loop)
Thing is, if it does everything you need it too, and it's properly protected, then why change it.