I'm a bit late coming in on this!
I have a Mac G3 B&W, and use it for producing artwork for printing as well as home use.
I do have Microsoft Office, but very rarely use it. I find that with Appleworks and Quark I can accomplish all I need. The only time I use Microsoft is when clients send me what they call a word-perfect file, which invariably I have to sort out to make sense of (Microsoft has made everyone a "graphic designer").
I must admit I have always used a Mac and am a die-hard enthusiast.
Never had a PC, never would. Mac has always seemed so much simpler.
But as already said the choice is yours. Microsaft does work on Mac.