When I was a pc user I took mine in to a tech service for work. I asked the guy (and he didn't sell computers) if the mac/linux systems were as bulletproof as I'd heard (mostly from guys here

) and he sorta looked around and looked at the ground and looked at me and said "Yes they are". I bought my first one then, almost 2 1/2 years ago. Since then I've only one minor crash (in which I lost no info and took minutes to fix). I run no virus scans, download no virus/malware updates, and enjoy a most excellent OS. One of the things that frustrated me with a pc was the constant paranoia of virus/malware and so I was always running scans and downloading updates, and I can remember telling my wife that it seemed I spent more time doing that than actually using the computer. I spent about $700 for a customized mac mini (which means I had 1GB of memory put in instead of the stock 512mb) in the fall of '06, and today it is still in great condition and the RAM is still fine for it's use. I use it for internet, email, word processing, and things like that.
All that said, I would like to build a pc sometime. I'm not exactly a mac fanboy, and see the purpose for pcs for the guys that know how to take apart/put together and really jack up a system to do extraordinary things. It would be fun to build one for gaming with my oldest son, and buying a mac strong enough to do that is $$$$ and then the game selection is modest. And depending upon usage there is always the linux route for the pcs, so pc isn't limited to windows.
It might not be easy to do, but you should try to find someone with a mac and see how their's works, maybe use it. It's a bit of a different experience; I use a windows system at work, and always try to use my mac tricks on it only to be reminded I can't do that