I haven't had too much time to play with you guys in this thread, but here goes.
I've been using PCs since I was 4, and have always had them around, so I know my way around the Windows operating system. I'm split between Mac and PC now, I have to use Macs for one of my classes at school, and PCs for another class.
I like both, a lot actually. I would love to have a Mac at home, but I'm not going to be shelling out the money for one any time soon unfortunately. The Mac Pro is an awesome machine, but a starting price of $2700? Ouch.
The PC I use at home I built 3 years ago, it still runs just fine. However, I've formatted it a bunch of times. None were from crashes though, I've had Windows 2000, Windows XP, Windows Vista, and three different flavors of Linux all one one poor hard drive, sometimes at the same time. It's crashed on me before, but all the crashes have been from either me intentionally messing around, or from poorly written software.
The Macs I use at school don't crash any more or less frequently than my PC. I've had one just crash while I was in the middle of writing a paper before, which sucked. I've also had one crash and lose photos. Luckily they were still on my camera. In terms of software, Aperture is an absolute disgrace. It looks beautiful, but literally doesn't work. You click the tab to adjust exposure and contrast, and there's literally nothing there. It's great for edge sharpening though.
I don't care what people say, both OSs have their own unique quirks. That's just part of being an OS, no Operating System is going to be completely intuitive for everyone, just because everyone things differently. For example, sitting here on this Mac typing this post, I would expect the end key to bring the cursor to the end of my line of text, instead it scrolls the page all the way to the bottom. Right clicking isn't exactly intuitive, but neither is control clicking. Ending a frozen program by holding the icon on the dock isn't intuitive, but neither is right clicking on the taskbar, opening the task manager, and closing it that way. Oh, and I do think it's weird that dragging a file to another folder copies it instead of moving it on OSX, but I could get used to it.
For the final one, clicking start to shut down the computer is no more or less intuitive or sensible than clicking a blue Apple to shut down the computer.
[edit]I do love the 360 degree scroll wheel on the new Bluetooth Apple mice, it's so helpful. I also like being able to finally right click with Apple mice. I do miss having all the other buttons that my PC mouse has.[/edit]