Lots of people do. And let me blow your mind some more: Lots of countries still use fax machines, for whatever unholy reason. Those things can be a pain in the ass to troubleshoot sometimes.
Home printing isn't necessary most of the time nowadays since everything is online. But a lot of corporate/office/industrial/professional type work environments print A LOT of stuff. They still need to buy printers and ink and get them serviced etc.