My Windows XP driven motherboard melted so I watched my wife try to use her new Windows Vista - the word defenestrate comes to mind. I didn't want to deal with that level of frustration so I got an iMac with Leopard (OSX 10.5) and support - it took me a while to figure out how to resize a window so that was money well spent (only the bottom right corner is dragable).
If you are OK with giving control and double the money to Apple then it is a fantastic machine - don't worry how it does what it does because it just works.
The only glitch I had was solved by turning off and unplugging the computer - it still uses 4 watts even when turned off - go figure.
(Defenestration is the act of throwing someone or something out of a window)