Sure, we probably all stare at our desktop machines for hours a day, and only poke at our servers for a few minutes each day. But, an hour-long outage of my primary server will effect hundreds or thousands of people. An hour-long outage of my desktop will effect only one guy. I'll spit and sputter and curse a lot, but it probably won't cost me business or customer good will.

That said, everytime something breaks on my desktop machine running Fedora, I think "Hmmm...maybe I should be running CentOS here."