Printers fail for mechanical reasons far more often than digital ones. Ink dries, paper absorbs moisture, rollers pick up dust, and each of these produces symptoms that look like a software fault.
Inkjets in particular are designed to be used. Ink sitting still in a fine nozzle dries within weeks, which is why the printer that only comes out at tax time is always the one that will not print.
Lasers are more tolerant of idleness but sensitive to dust and to toner that has settled unevenly inside the cartridge.