I have 3 PCs and one Mac all running fast and smoothly without any viruses or malware of any kind. So you tell me, what's my problem?
Yes, I have comprehensive security protection on my 3 PCs ($49 for all three per year) but that's cheap protection to get machines that are standard, non-proprietary ATX hardware that are easily upgraded, expanded, repaired without the need of "PC Care".
In terms of viruses and malware, there is something to be said about a 'carefree' internet and online mail experience, which is what you get with a Mac....for at least now anyway.
You may be virus and malware free, but you as the consumer have to work in order to keep it that way. By 'work' I mean that you have to continually buy and update your virus and malware protection, which I don't care what you say, are not fool proof, and some will slip by no matter what you do. And then there is the tip toeing around the internet, ensuring that you don't go to the wrong site, or open the wrong email. With a Mac, there is none of that. I can go where I want and open whatever I want, and really have no worries of any type of virus or malware infection.
This kind of end user experience is worth quite a bit to me, and something that a Windows user will never experience to the same degree no matter what safeguards that they put into place. There's always a smarter hacker around the corner.