On TOS there was a fasting thread, and i talked a bit about some of my hard core fasting. I lost 150lbs in about 8 months and after almost 3 years I'm still 125 down. So went from 345 to 195, and i hover around 225 now (I'm 6'1 and 53 years old).
So not close to skinny, but can tie my shoes and run a 10k without dying.
All that to say I have some experience being fat ( i had a decade of big time obesity and a life time of needing to lose a few). I understand them.
Those fatties know they are fat, they have just given up and don't think they can fix it. Every minute of the day they think about their weight, they don't go on family vacations, or if they do, it is reluctantly. That guy debated about going to the astros game because those seats are small and he knew they will be in the next person's way sitting there - but someone convinced them and they couldn't tell them why they didn't want to go. They wake up every Monday morning saying today is the day it will change and they fail by lunch. Over and over, decade after decade they fail. All that failure is just a beating and have given up. They have accepted their fate - they are committing suicide, and they know it, and they hate themselves way more than you hate them.