Rage...? Goodness I hope not. I sure do get annoyed at the selfish attitudes of some though. Too many people seem oblivious to those around them. I can dump my black while hooking up the black tank flush line (if there is one available) and turn on the water. Then I close my black tank and open the gray. While the gray is dumping, the black tank is filling up with fresh water for a second rinse. When gray is done, open the black a second time and let it drain.
When there is a line behind me, I can be done in 5 minutes. The tank isn't polished and clean enough to eat out of, but in 8 years I've had ZERO odor issues. Just as important (to me at least) is the fact that I have been courteous and considerate of those people waiting behind me.
The people that spend 15-45 minutes dumping, flushing, filling, flushing, polishing, double checking, flushing again and slowly putting supplies away are inconsiderate. I get annoyed, but not enraged...