It's sad, really, that Windows is such a dumpster fire that people think antivirus software really is mandatory.

Change to an open source OS and antivirus becomes a quaint little tradition, something you indulge in because, yeah, there is that poor guy over there who has to use Windows because his application only runs on that. So we have to scan the files he sent.

And then, there is the corporate world, where everyone thinks Windows is the only real OS.