darwin (but not os x) users? (Score 5, Interesting)

I'm curious about the number of people who run Darwin (but not OS x) on Apple hardware. I have Darwin 8.0 already as part of OS X and see no good reason to strip off the GUI and go "Darwin only". On x86, the hardware compatibility list seems to be woefully short. Is releasing Darwin just a feel-good thing for Apple, to show support for the open-source world? I can't believe it's just PR, yet I can't see the user base being there either. The whole appeal of Macs (at least for me) is to get the nice GUI plus the UNIX underpinning rather than Yet Another UNIX-like distribution in Darwin.