BSD is Dead (to me)
Fear the penguin.
I gave FreeBSD a shot at being my workstation. I spent more time on it then I spent on all 7 Linux distributions combined.
While the system was clean and nice, Matlab would just not work correctly. Yes I had it running under the Linux emulation layer, however it would not accept unix system commands. I use this heavily so I am installed Fedora Core 3.
I do see the humor in choosing Linux over BSD because more applications are supported. This is the common argument used by Windows users for not choosing OS X or Linux. However, the difference in choosing Linux for the programs is kind of like not being happy with an elected official in a democracy. You can always vote for someone else next time. If someone doesn't like Linux they can take the code and change what they don't like while still adhering to the standards that allow it to operate Linux programs. This isn't possible in Windows.