Ok- here is the pychologist in me..... Anger is a secondary emotion and in this case I think the anger mostly stems from fear of the unknown or jelously.

Let me give you an example.... My BFF had gastric bypass in 2009 and lost 120 lbs in a year. After her weight loss she went to an orentation for a new job. (She is a nurse) The people in her group were discussing WLS patients. One of the guys in the group said "I can spot WLS patient a mile a way, they look horrible, all that hangin skin and sunk in eyes- I'd rather be fat". (the guy was obese) My friend ask, "well do you think anyone in this group has had WLS?" He said "no, everyone looks pretty normal" She smiled and said, "thanks, but I had WLS a year and half ago and have lost 120 lbs.". We figured this guy was just afraid of WLS, while he could benefit from it he was scared.

To each his own, but I like you wish people would just respect another person's choice.

Well said, I also see it as jealousy for not having the courage to change or absolute fear to change. Being fat may not comfortable, but it was my hiding place. I had to dig deep for the courage to change. It was scary, but so well worth it.