|A distribution for the Linux fundamentalist...|
Arch Linux [...] is suitable for Linux power users who still prefer the command line interface (CLI) to GNOME or KDE.
Believe it or not, there are still people who find the CLI to be the most comfortable way to get the most out of Unix or Linux. I should know. I'm one of them. It's not that Arch doesn't let you use a GUI; it's just optional.
I strongly suspect that's why Arch is as popular as it is. Arch Linux is currently, as of early December 2010, number eight on DistroWatch's Linux distribution page hit list.
You see, Arch Linux, without requiring you to master kernel compiling 101 gives you an enormous amount of control over how Linux will run for you. That starts from the get-go.