Yeah- I've only been a 20 year + Mac user, and grudgingly had to deal with PC's at work, and not once had a major hardware failure, or a virus, when I think back on all of the time I saved not dealing with PC problems, I am quite satisfied with my decision. And no I'm not going to put a bunch anti-virus crap on my Mac and slow it down. I'm not concerned in the least.
I get a virus, I just revert back to a mirrored copy of my HD, using Carbon Copy Cloner.....simple as that.
Besides, the reality is that PC's are now going to be dead, as tablets are taking over the computer industry.