So, as someone with DIRECT experience in this (from a family of morbidly obese people and on that route myself at one point), it's still completely self control. I totally understand what you mean by being able to consume anything and constantly hungry. This is a learned behavior; I'm sorry you learned it. I notice it with my children. My parents will want them to eat and they'll not want to. I just toss the food. My parents would force it on them were it not for my intervention.
The food must be tossed though because we have too much food in 2025, not too little. As i've explained to my parents and aunts and brother... if you consume the food you've not saved money by fully extracting the food's value. The food's value to your body is in a curve. Once you pass the nadir, the food becomes toxic. Thus, you are paying to kill yourself.
Anyway, yes, absolutely for someone with this learned behavior, it takes A LOT of work to unlearn it. It's taken me years and sometimes I still get the same hunger, but it dies down. You must understand that this ability to be hungry all the time is completely learned though. After several months of intermittent fasting very strictly, this finally went away. You must understand that you will feel incredibly free when one day you see something that tastes good, that you know tastes good, and don't feel the need to consume it.
Because of my DIRECT experience, I encourage others to pursue this path and do not give up. So while I understand completely where you are coming from, I also understand your friend's disgust over the pizza and hamburgers. This is the normal response to food, especially the highly greasy / sugary stuff like most modern food. The first time I had ice cream after a long no-carb diet, I could barely stomach it. Again, this is normal but no one told me that growing up; in fact, the opposite was encouraged.
> Absolutely wild. Maybe that's the next level of human evolution:
No it really just means you prioritize other things than filling your stomach.
One thing no one ever told me is that ... you don't have to eat. Indeed, on days where I do very little I barely eat anything. Again, that's NORMAL. It doesn't sound normal to many people because we were raised wrong. On days I do a lot of exercise or house work or physical labor (i have a desk job), then I eat more. That's normal. The eating three meals a day whether you need it or not is not normal at all.