The problem is currently GUI. There are no good GUI's to work with git. Windows and Mac OS X have some GUI tools scratching the surface of what's possible with git, but none come close in opening up the full possibilities of git. Linux has a few very alpha, specific (like showing branches) GUI tools.

If we want non-programmers to use git, we need GUI's to instantly visualize the state, commands and other possibilities. No non-programmer is going to learn git using a CLI.