It’s easy to understand why you’re upset. Your doctor says that you need this surgery to get relief, but in order to have the surgery, you’ll need to meet them halfway and lose at least 20 pounds.
A lot of people have felt this frustration. It may be due to the seeming lack of compassion on the part of the doctor as they wave their hand in the air, tell you to lose weight -as if it’s just that simple- and then walk out of the room.