I received a nasty virus about 18 months ago that caused me real heartache. Since then, I have educated myself on the need for AV protection and the use of a personal firewall. I have been free of any problems for more than 12 months now ...
I dont know why this topic keeps coming up ...
When I wrote my thesis in college, Mac was the tool of choice. When I do business communication, its Windows. When I want to do large scale data analysis, Unix is the only OS that will do.
Each has its use ... the right tool for the job ...
You are aware that Macintosh OSX is UNIX, aren't you???