Hi everyone,
I have been using the AppleMac now for the last 19 years and have been through just about every model of it as well as all the various OSs.
Yes: I have never had the problem of any virus attack ever, but then, this could just as well be due to the fact that I have ALWAYS used an A/V!
Have had my iBook now for well nigh 2 years. Have worked my way up thru the OSX to its present version 10.4.9.
BUT, I had installed a purchased Norton AV from day one: and happily continue to pay whatever I need to for the annual license. I rather be safe than sorry and the peace-of-mind is worth the cost, I feel.
Your call, in the end!
cheers