While I am an advocate of AV programs and security software, if they don't want to use them and have never suffered any side effects or consequence, then why change their status quo?ignore the dont use an anti virus at all. its a must have especially if your a legal down loader ahem and i recommend AVAST!! for virus protection its thee best and for virus CLEANING, i recommend malwarebytes. best part being that both software are free
"If it ain't broken, don't fix it." If their rig is working fine, don't introduce a change into the system
Just because your car is 2000 miles overdue for an oil change and is still running great doesn't mean the oil is gonna be good forever.