I guess my purpose (if I had one...) wasn't to embarrass the person or exact revenge, but just to vent my frustration. It's really not a philosophy to which I ascribe, because you can very easily lose control and either say or do something you wish you could take back.

By and large, I'd rather have someone say, 'Wow, she has MS but she has such a sweet and forgiving attitude", than "Wow, MS must make people psycho."