I switched to Mac this year because of security issues with Windows.
I did the same thing last year for the same reason. I use a PC at work because that is what our system is set up for. BTW I don't have an IPod nor do I plan on getting one. I just like to get on my computer and use it whenever I like without going through a checklist of defense taskings and renewing software yearly to keep malicious creeps away. The Apple clique never did much for me but I got to admit their box is easy to use and is just safer than the PC. In the end they are all just consumer items and I choose to go with the one that works with much less hassle.