I like Windows and I like Mac OSX, so I have them both. On the same machine. All modern Macs use Intel chips and can run Windows natively; they're some of the fastest Windows machines out there, and you do a clean install so there's no junkware like you get on computers from Dell.
I use Mac and Windows every day and I don't think one is particularly superior to the other; the current versions are very stable (Windows 7 is reportedly very stable; I'm still using XP and that crashes maybe once every 3-4 years; MacOSX crashed on me once about eight years ago).
I don't notice a big difference in the availability of apps; there's only one program I use regularly that's only available for Windows and not for Mac. Plus the Mac runs on Unix and lots of Unix programmers use the Mac from the command line without ever using its GUI.
The main difference I see is that Apple understands that most PC users are not geeks and have maybe 10-15 minutes per week available to learn how to use their device and its software. So they try to make everything simple, run the same way across all their devices, and as intuitive as possible. In that way an Apple product user can be more productive than a PC user because less time is spent trying to figure out how to use the thing and you can get down to work faster. When you look at Microsoft products in contrast, you can tell that many of them were designed by people who assumed that you'll be working eight hours a day on their programs and you'll get a training course. Plus they had input from focus groups who demanded that this and that feature got added until there were so many features and menu items that the end result is a mess.
Don't get me wrong, I use Word, Excel, and Outlook all day long and I mostly love them. But most people never use 90% of the functionality offered by those programs and never learn how to use them the way they were designed.
Personally I think that while the "coolness factor" of Apple is one reason behind its success, the other big reason is Apple's ability to see its devices in the context of people's lives, and to understand that people have limited time and interest in learning how to use a computer, a phone, an MP3 player, or a tablet. And if you can make the computer, phone, MP3 player, and tablet all function the same way with similar interfaces and approaches to navigation, people will be grateful (and buy those devices) because they already know how to use them.