@Darthfett: What do you mean? As far as I know it can be turned on and off in game..
I took your other post to mean you though you couldn't go to menu - options. Yes, it would be nice if alt permanetly changed it on and off, though.If you have them always on:
You have to hold alt to get rid of them, and they can be really annoying in some games.
If you have them always off:
You have to hold alt constantly to see the bar, which you really need for some games.
There should be a chat command, or something really fast and easy to do, to turn them off. (I forgot that you can go to the menu -> Options and turn it off from there, but it's still a pain to have to go and do that).