I have been getting a lot of questions from friends and family about Mac as they are all getting fed up with their PC's. I have been using Mac for about 3 years now and have never had a problem with viruses or spyware but I can't find any good info on why viruses and spyware simply don't seem to exist on mac. There is a lot of "viruses are impossible, or have never happened etc..." but no real discussion as to why. Then there are the arguments that Mac is no more secure it simply isn't targeted because it is a smaller portion of the market which seems a bit worrisome as obviously Mac is gaining popularity. What is the reason viruses and particularly spyware don't appear on mac? When I had a PC it didn't matter what I did I had hundreds of spyware out of nowhere just reading blogs or barely using the internet yet in 3 years of Mac ownership not a single spyware/virus.