And the wireless feature is crucial if you want to print from a phone or tablet. But I still connect with a USB cable if I don't want my printed material to go over the wireless for some reason. Occasionally, you lose a file in cyberspace, which doesn't happen with a USB port.
Printers these days are usually equipped with wi-fi capabilities, as well as a USB printer cable. And that's as it should be. Some people may not have wi-fi access, but need to use their printer, and should be able to do so. Even in these days of digital, we still need hard copies of some things!