Eh, except you could build a hackintosh that would make the real Mac look silly. Dual overclocked Xeon 5680s FTW

You could dual-boot it and use regular PC CF 6970 etc as well. Oh and more than the 64GB Ram limit

Very few people would do that though. You can build pretty killer hackintoshes for 1/3 the price or less than competing Apple products if you purchase carefully.
lol. but seriously, people should use what they like and what works. I haven't had a PC problem since the 90s that I couldn't solve in a minute or two, outside of pure hardware failures that aren't platform specific (drops/failed components/etc). For me it just works. I go and try to do the same with a Mac and I feel like absolutely everything is amazingly complicated to find and use, outside of basic stuff like opening a browser/word document. My brain simply doesn't want to shift gears to learn how to efficiently get around the OS, though I know it can be done. I can understand how a lot of people could feel the same way in reverse.