Just because you don't know HOW to navigate doesn't mean it's hard. It just means you don't know how to do it. Play around for half an hour and you'll realise that the way Mac OS works is actually more intuitive than windows. You can do more with less actions (don't need to go through as many windows/folders or click as many things).
In my course there are at last count six regulars who bring their powerbooks/ibooks to lectures, and a whole bunch of others with PC laptops of various descriptions. Whenever we set up ad-hoc wireless networks, or open up MS Office (which, by the way, is not only FULLY SUPPORTED on mac but way sexier and more functional to boot) they just drool. Even the majority of lecturers are on macs.
Sadly the macs at UTS are old models, only the HSS people have access to GOOD machines (PowerMac G5s) and they will tell you that once you've used a powermac, there's no going back. The whole "more power is only useful for gamers" approach is absolute rubbish - gamers tend to use PC machines since (sadly) most developers severely neglect the Mac platform in terms of game development and release. The power is actually far more relevant to people working in media (music, movies, visual art etc), architecture and other graphic design, scientific research (LOTS of number crunching takes place on G5s), engineering (simulations and modelling), and tons of other stuff. This is why Apple's primary market is academia - school/university students and academic researchers.