I’ve always hated anti-virus software. It slows your computer down by using massive resources. It prompts you for updates and other garbage, and of course it’s not free.
I’m the “Computer Guy” that most of friends (and my friends friends) contact when their computer is not working. About 98% of computers I find infected with viruses or malware have anti-virus software installed and running. Now my personal experiences are backed up with this article:
Mr. Dye estimates antivirus now catches just 45% of cyberattacks
There you have it! Straight from the horses mouth!