The more people do it the more dangerous it becomes

found on Rahul Kumar's blog

There are certainly those who believe AV should be abandoned altogether and cite their own experiences not getting compromised while not using AV as evidence. But those are merely anecdotes and they don't reflect the fact that part of what keeps those people safe is all the other people who ARE using AV and making it harder for malware to flourish long enough for those who aren't to be exposed to it.

In biology this is called herd immunity. It only works so long as a certain minimum threshold is maintained and telling people to abandon their AV threatens to bring the number down below that threshold and make things worse for everyone.