Which operating system do you use, and why?

[Mnementh]

In the past I often switched Operating Systems (my OS-history so far: DOS -> OS/2 -> Windows98 -> Suse Linux -> Windows 2000 -> Sourcemage Linux) and in the future I will possibly will switch again. I boot Windows 2000 sometimes to play Starcraft or Unreal Tournament, other than that I use Linux as my main system. The main reasons to switch to Linux: 1. I was pissed, because Win2000 get reduced support. For instance IE7 needs XP at least, with no real OS-function it needs. But XP has no advantage about 2000, so I saw no reason to pay for OS again (I didn't got Windows as OEM - selfmade PC - so I payed to get 2000). With Linux (and other free Unix) I get updates and support for free. 2. I use now the Windowmanager Fluxbox, that uses only few space on the screen and can be controlled by keys. That is much faster. Even more, as menus in Windows are often animated - that takes some time. So I'm more effective with Fluxbox. 3. Windows lacks a decent commandline, that allows effective work. So I used with windows cygwin, a Unix-environment for Windows. Under Linux the powerful commandline is part of the OS. Why I choose Linux and not another free Unix (Free-/Open-/Net-BSD or OpenSolaris). Simply because Linux has the best driver-support for PC's in the moment.