To summarize....
...the ensuing comments:
MS is EVIL! Windows is vulnerable by design! No it isn't! Yes, it is! Well, OSX/iOS has flaws, too. Yeah, but they don't need an AV product. What? You're deluding yourself. Nah, haven't had a virus I could detect (even without the AV product) since I switched over to the Mac side. Still, Android products are getting hammered. But that's only because of vendors not updating the OS often enough and consumers downloading things that ask for bank account details and passwords and accepting the defaults. And then there's Linux...
Discuss.