Last year I worked in a writer's room with five other people - they all had Macs. Every one of them crashed, lost scripts we were working on and three had to go in for expensive servicing. My PC plugged along with no problems.
(of course now hat I've written this it will likely crash)
I think a lot of views about operatng systems are outdated.
Still, I want an iTouch and an iPad for sheer coolness.
I've repeatedly had the opposite experience. And (touch wood) I've never had an issue with viruses, etc. The iTouch is a great gadget: I took mine to the gym today--read my own book on it while listening to ZZ Top and walking on the treadmill. Worth every penny.
My problem with Windows is more of a look/feel thing. It's just still really clunky compared to OSX.