Being able to actually own the operating system I use, and being able to research and understand anything pertaining to it if I wanted to. There are too many black boxes in computing as it is.

I don't really know too much about Linux, I'm still using it fairly mindlessly as a workstation- oriented end user.

I don't really go out of my way to recommend Fedora (for example) to other people unless they're already specifically looking into playing around with a distro.