Before I start, please know that I am FAR from computer illiterate, in fact I consider myself quite educated in the field of computers, although by no means an expert.
I own a Windows and a Mac, and use both of them regularly, and while the Windows can do things that the Mac can't (mostly NL: yes, I know there's a mac version, but I already bought the Windows version), I much prefer the mac. It's smaller, and definitely faster (my PC was a $300 middle-line computer when I bought it-no, I didn't build it, and the mac is a $400 mid-line 1st gen mac mini), and the UI is a hell of a lot cleaner than the Windows is. My favorite thing about it is the dock, because I almost always have programs I'm running maximized and can't reach the desktop shortcuts, so extra keystrokes and mouse movements are required to get to the program I want, whereas on a mac, one click and I'm there. Second, I am a sucker for animations, so the mac's "genie" animation when you close a window really draws me in. Third, there are simply too many options on a Windows computer. I recently bought a new graphics card for my Windows machine, and it took a week to find the best one. A day later I went in for more memory. That took an hour. Granted, I wouldn't even have the option to do this if I were on a mac, but that would have saved me a TON of hassle and annoyance. Finally, Apple makes products that outperform anything else in the personal music industry. My iPod Touch, however expensive, is literally hundreds of times better than any other touchscreen device I've messed around with, and even my iPod Mini I had before it kicked all other mp3 players' butts. The only problem was that they were compatible with only - yup, you guessed it - macs. However, I will be the first to admit that old Windows computers are wayyyy better than old macs, but that all changed in the past few years. For the most part, I agree with the claim that Macs are for artists and the like, but not entirely. My dad's not an artist, heck he's about as un-artistic as they come (a computer science professor), but he LOVES macs. In fact, he was actually pretty reluctant to get me a Windows machine! My personal belief is that Macs are for people who could care less about computer games, and more about easy-to-use, straight-forward productivity. So what if it's dumbed down a little? If I don't need it, why is it there? Your answer to this: "because sometimes you do need it". maybe, but in my opinion not often enough to warrant a readily accessible shortcut to it on my desktop.
There are some other perks of PCs that macs can't match. First, you have a HUGE selection of viruses to choose from (sorry, I had to throw that in there). On a serious note, the compatibility with most things is much greater for PCs than for macs. And if I really cared about Gaming, a PC would definitely be the way to go.
My final point: I'm beginning to notice that there aren't any "you know what really grinds my gears" topics saying that PCs are better than macs.
Well, there you have it, an argument as unbiased as I can make it. I feel like I probably missed a point or two; it's late, and I've been up all day. Feel free to call me out on it. Other than that, enjoy.