A huge GRRRR....
If you don't think your weight hinders your performance or joints, then just ignore him. Orthopedic doctors deal with a lot of people who do have problems because of their weight. His words were poorly chosen but he probably thought he was helping you.
Honestly, for me, I am up 20 pounds and the weight is definitely too much on my hip and knee joints. I am older than you and I want to make sure I am mobile in my older years so I am working on losing them. I see too many senior citizens who struggle just walking through a store. I don't want that to be me.
Laura in Texas
53 years old; 5'7" tall; HW: 339 (BMI=53); GW: 140 CW: 170 (BMI=27)
RNY: 09-17-08 Dr. Garth Davis
brachioplasty: 12-18-09 Dr. Wainwright; lbl/bl: 06-28-11 Dr. LoMonaco
"May your choices reflect your hopes and not your fears."