Ok, so those of you who know me know that I am a Mac maniac!!!
LOL. I LOVE my Mac, but like others have said, there are unfortunately some software titles that you just have to have a PC for.
I have OS X Snow Leopard, and I use Boot Camp to dual-boot with the new Windows 7. Works out wonderfully!
The thing I love most about my Mac is the stability and the fact that I don't have to worry about viruses and bugs.