The debate about whether antivirus software is still useful has been going on for a few years now. This technology was once the mainstay of the security efforts for most businesses and home users. The challenge of late is the ability of these products and their providers to keep up with the rapidly changing threat landscape. This debate is front and center once again, particularly with the rise of ransomware, but without a clear answer.
as long as windows exists...AVs will always be needed.
yes, they may not catch everything all of the time...but they never have. the thing is that they do catch what they can and you're still safer with it than without.
If so, we have Apple's business model to thank. Otherwise we would still be paying for anti virus software every year.