Apple FanBoys and FanGirls Unite

Here's the best way I've ever heard it told:

You want your computer to do what you tell it to do.
With a windows machine, you have to worry about the thing getting too infected to to do what you tell it.
Linux requires you to teach it how to do everything you want,
and apple does what you tell it to.

My favorite combo, is an apple main computer with a Linux machine on the side for play.