I agree, except for when you are at a tournament from 8am till 5pm and it is 90+ degrees, it is nice to take a breather. Like I said, I have only used mine a few times. I can't say I really needed it either. I figured I would get one to see if it was worth the hassle.
I can understand tourneys a little more, but i saw a guy sit down during a casual round. He sat for one persons throw, just to stand again, all with this stupid look on his face, like "look how creative I am" If you can't walk a course during casual play, you might need to pursue professional help, cause that is really not good