They're overpriced!!!!!!! I know how to work both systems because lots of my friends have Apple and I'll still stick with PC.
Apple's designs are pretty cool and the OS isn't bad but their products aren't for me. Most of my friends who own Apples are designers/lawyers/etc. and my engineer friends still use PC... I can't imagine trying to use Excel with a one-buttoned mouse
And I can't stand the argument some Apple users have that "they don't crash" and "they don't get any virus". I've seen a handful of virus infected Macs and been there when they crashed!!! So why pay $1500 more when you're getting the same thing you get with a PC