It also has a hefty library of ready-made figures. I don't know how many people use them outside of system administration, but cron and at are already using resources on my system. Another very important thing from this perspective is that most users are not administrators. I'd guess that many people first used a computer at work or school and then later bought one for the home. Two important things here are that the user's environment should be portable and that it should be cleanly separated from the system environment since that may be used by other people.
Some people do use it to run apps remotely.
That .gtkrc is on the X client side is a problem here. That's why I found this interesting and would be glad if someone eloborated a little. We must solve this problem, JG has a partial solution there is multiple possibilities. I'm excited about this. The accessability groups all seem to have their heads screwed on straight.