What I like about different OSes

I use three different operating systems for a variety of things. At work I am required to use Windows XP. At home I use Windows 2000 for gaming. For graphics and programming I use Linux. And for surfing, and video I use Apple's OS X.

Some things I like about Windows (XP):

10 year old programs still work (especially old favorite games)
Games are widely available (Half-Life)

Things I like about Linux (Ubuntu):

Insane amount of customization if you want it.
Free and open.
Auto-update entire system (EVERY single application) with a single command.
Wide range of network tools are typically included by default.
Easy to administer.
Almost never have to reboot for an update.
Helpful community.
No real viruses, and no spyware to be afraid of.
Easy to run as a restricted user and still get things done.
Middle-click copy and paste.
Very very quick formatting of large hard disks (maybe 15 to 20 seconds tops).

Things I like about OS X (Tiger):

Best looking out of the 3.
Very easy to use, especially with media hardware like cameras, scanners, and camcorders.
Great multimedia applications included (like iTunes, iMovie).
Very stable.
Same basic underpinnings as Linux, so it is easy to apply Linux/UNIX knowledge to OS X.
Easy to configure (not the same as administer).
No real viruses or spyware to be afraid of.
Easy to run as a restricted user and still get things done.