I work with both...
As for a MAC...
Pros:
* The majority of viruses are written for Windows so if you don't have Windows, you don't have anything for viruses to feed on.
* Everyone tells me they are a thousand times better for creating graphics or music. I create graphics on both my PC and the MAC at work and other than the fact that I am too poor to afford the Adobe Creative Suite I don't see a lot of difference. And I don't create music so.......
* They don't freeze up nearly as much.
Cons:
* When they do freeze up Force Quit (i.e. CTRL+Alt+delete on a PC) is a lot harder to access and doesn't always work. Of course that is the case on a PC too...basically that's a computer thing.
* While a lot of things are being made to be compatible with OSX, there are still a lot of software and hardware out there that aren't.
* As software becomes dual compatible, so will viruses, nulifying the first Pro I offered.
Basically, I used to hate MACs but they have improved on them a lot from when I used them in high school and really there isn't a lot of difference in the two anymore. That I can see. How is that for convincing?