I don't use virus protection, I just maintain smart and safe browsing practices.

Can't remember the last time I've had a virus.

I've found that safe and smart browsing is more effective than a resource hogging virus scanner, any day of the week.

I have a thumbdrive with a bootable copy of Windows and a bunch of great malicious software removal tools in the event I DO have a virus.
Never had to use it for myself, but I've rescued a few work computers and friends' computers with it.

I keep nothing of importance on my PC, anyhow. It's mostly for watching movies and streaming media around the house.

My Mac is my main machine, which I keep backed up in triplicate.

Of course I keep regular & incremental backups... just in case.

I use Malwarebytes. It's relatively cheap, and I'm very happy with it.

New Zealand company. Works well for me. I am not affiliated with this company in any way other than as a user.

so viruses which try to take control like a ransom ware program can't ever fully do so b/c they can't shut it off. This saved my system once when the antivirus running on top of it failed. I run Avast in addition to Superantispyware.

That alone makes them not wanted on any computer I own.

Why take the chance?.