Though for now no one has confirmed that a osx virus exists...I wouldn't want to be without any "protection". Also, being that I am a recent switcher...I still have a desktop m$ system in my house, use them at school, and even if that should ever change...I still send emails or whatever to pc user friends. I wouldn't want to infect them. You wouldn't cough in your hand and then shake your buddy's...would you?
