I am an old gamer. I have owned them since the days of the Sinclair and Commodore and Radio Shack computers were popular and built them since 386's were the norm.
I don't run any antivirus programs. At all. The best antivirus out there is Your Brain. First and most importantly, I don't use Microsoft's email client nor Internet Explorer. I don't open untrusted email attachments. I can spot a scam email a mile away and delete it right off without even opening it. I watch what I download and if I'm at all suspicious, I run it on a virtual computer setup first. And I use Firefox with NoScript installed.
The only time in the last 10 years or more that I've gotten a virus, I worked for a place that didn't allow me to use NoScript so I had to run antivirus. I chose Avira. I got a virus from one of the pages I was required to visit. I quickly got rid of it but there ya go. It really helps to have another computer to download or make fixes on when that happens. No, my second computer is NOT networked to the first. Nor do I use a wireless modem. It's just so much easier to plug in that wire, brainless in fact. And much safer.
All of Norton's (Symantec's) products have been nothing but a drain on my computer's power. But then they're all a drain. If they aren't the biggest drain then you have way too much unnecessary garbage running on that thing.
So there you have it. This works for me and before you holler about risking it, reread. For me, I'm not risking much of anything. Were you to do this, you might make riskier choices in what you're doing and need the antivirus. I do not.