Oi! You're forgetting OSX!
Honestly, you're upsetting Jobs here. After all that marketing, after suffering that itchy collision between beard and turtle neck every time he needs to announce a product - after all that you still forget Apple?
Honestly, what is the world coming to (its senses, I think, but I digress).
Kind regards, a Linux/OSX user.
Oh, and WinXP, but I use that machine maybe once a month (likewise with the Parallel's WinXP segment). And using it once a month makes you realise just how much crap you have to download to keep it running, both those platforms then spend a good 30 minutes, patching, rebooting and generally being no use whatsoever until they have had their updated. The OSX platform they run on updates, well, umm - every other week or so or less. As a matter of fact, I only really started Windows-alike update frequencies when I installed the Adobe PDF reader..
Anyway, I *know* why I no longer use Windows, and that has less to do with any fanboy-alike preference for anything else, more with actually getting some work done..