In fact .. the best antivirus is one that is between the notebook and the chair.
I dont use one, only common sense. For years w/o infection. I only have adblock on my browser.
Open .pdf's online, and test new programs in sandbox or VM. No sense in paying for what you dont need.
I quite agree with them. You are the one who uses your own PC so you have the full responsibility with what's coming in and out of it.
Having an antivirus doesn't mean you're completely safe. The one who still controls it is YOU.
There is no perfect antivirus but there can be a knowledgeable user.