First off I'm glad that you were able to have the surgery and help with the pain. I'd miss a quality debate partner like you.
You make my point exactly when you say that they make those comments because they have not lived my life.
My frustration is that I have not lived as a woman or an african American or as a person who is gay...and it would be unacceptable for me to make generalized, stereotypical, hurtful comments about their lives. "I'd rather be dead than gay,black,female,old,catholic"
Why then can people not understand that they should treat people with disabilities the same. The old saying (slightly modified)...."Roll a mile in my wheelchair" before you say something....