Hello there. My name is cyk and I'm a switcher. Aperture is a great package, with a great bunch of features but its dog slow on anything but a Mac Pro with 4gb of ram, and thats just silly. Photoshop CS2 runs fine, for the most part, on my Macbook Pro with 2gb of ram. CS3 is much faster. I run Photoshop and iView for my photography. Both available on OSX and Windows. I like that they are as I can just work on any machine. I prefer OSX. There is something about the Apple community. People go that extra mile on OSX when creating their software. There's always nice little touches in every program that make it that bit nicer to use over the Windows clone. Adium over Miranda for example. Adium has spawned a whole bunch of plugins for Miranda to copy its style. Then there's Parallels. Want Windows? Got it. You can run Windows inside of OSX, and I mean inside. You can run IE7 in its own window in OSX just like it was any other OSX application. For a web designer the new Intel Mac's are the design platform imho. You can test in IE7, IE6, IE5.5, IE5, IE4, Opera, Firefox, Safari, basically any browser on OSX, Windows or Linux. CSS Edit is a fantastic program for CSS live CSS editing, and theres a whole bunch of programs like that for web dev on OSX. I'd say Mac's have an advantage for Web Dev. For Photography, not so much. Its just a different way of working on your computer on a daily basis. For me its a nicer way. I prefer the way it looks and works. I love the ability to label folders with various colours on my desktop so I know whats for work and whats personal instantly. I love Spotlight for its easy ability in searching everything I have. I mean everything. I hit Apple + space and type a keyword in and it finds it. It searches emails, keyworded pictures, google, del.icio.us bookmarks, mp3's, videos, folders, text files and all quicker than anything ever. I like the integration of packages in that I can create a playlist for a movie in iTunes and drop mp3s in it and its available in iMovie for use.
I am a gamer too. If you want games you can install Windows via Bootcamp just for your favourite games if need be. That partition can be accessed via Parallels too when you're in OSX so you can run everything, aside from the games. Also, ignore the whole 1 mouse button nonsense. Its such an old joke. You can easily right click on a 1 button MBP trackpad just by touching it with 2 fingers. So easy.
For me, I just prefer the Apple way of doing things. Some prefer Windows, some Linux. Some people hate change and just can't handle it. They get angry when OSX or Linux doesn't work like Windows does. Why should or would it? If you're open to change, if you appreciate the little things in life you might enjoy switching. I know I have. Has it made me a better photographer? Probably not. Would switching from Canon to Nikon make me a better photographer? Probably not.