In all fairness the majority of issues I have to fix on a daily basis through my work are caused by the user by either not using their common sense (ie clicking ok without reading error messages etc) or because they think that because they can whip and word document they have suddenly become IT experts and get carried away and completely bugger something up.
You tend to find (in experience anyway) that people don't tend to migrate to mac's until they have been using PC's for a fair while and mac users tend to be more experienced and IT literate (I know there will be the the exception so please don't flame me!).
The real reason why I have decided to go mac full time? After twenty years of using Windows I'm bored of it and the design of the Apple hardware is brilliant. I can honestly say I have never seen a pc sitting on a desk and thought 'wow, that looks sexy'. The first time I bought mac was a macbook because it was lighter and the battery life was much longer than any Windows laptop which was great for meeting etc and it looked good. Over time, as I have learned how to use it fully, I came to enjoy using the mac os and have found that I enjoy using it more than windows.
I can't honestly say it doesn't do anything I do better than my Windows machine did (in fact I still use a lot of Windows applications in Parallels coherence mode) but I like using using it, I want to use it.
I feel the same. 20 years of Win was enough. I got bored. And no Win machine has the looks. Not my first requirement, but as long as my needs for speed, silence and power are satisfied, then sharp looks does not suck