To be fair, I have never had any malware with OSX and I'm certain I will not. OSX by its roots (BSD) means it doesn't get the kind of malware that plagues all those M$ Windows computers. I feel safe with OSX and have no need for antivirus. If you give our your root password to a random program, well, you're stupid. But if you use Windows you get infected just by connecting to the internet. I've never had such experience with my Mac.