> There's a bit of cognitive dissonance in seeing a hugely fat person and trying to imagine that their nervous system is for some reason acting like they are starving. It's a lot easier to imagine that they just don't have the willpower to resist that extra snack, which is a situation a lot more familiar to most of us. But it seems likely that the further is more correct.
yes, 100% this. Your analogy with scratching the itch is spot on. And you know that the itch that you can't scratch will continue forever until the end of your life. How depressing is that? It's not like running a marathon - with a marathon, it's long and hard, but there is a finish and you can rest after that. With being hungry all the time, there is never a finish. You just gotta keep on running. And running's kinda hard - and if you stop resisting and eat a few big meals, you offset weeks of weight-loss. Losing 100 calories a day for 20 days is hard, but gaining 2000 calories a day is real damn easy, and also feels great!