Appetite is 100% linked to calories needed. You still enjoy food, but the moment you swallow enough calories for whatever you did since the last time you ate, you have zero appetite and anything put in front of you loses all appeal.
Terrible for survival situations, great for modern life where an abundance of food is a bigger problem than a scarcity.
Being able to tell how much food you need in advance would be better, so that instead of thinking that you're really hungry and piling your plate, you only buy or prepare as much food as you need. That would cut down on food waste too.
Maybe it could be based on the average daily calories used each day over the past month to replenish exactly what's been used plus predict ahead until the next meal time?
My appetite is at least 90% based on calories needed, since I was around 25, I 'm over 50 now. My kids laugh at me when I sometimes say I'm still full 6 hours after eating, but sometimes I am. Or eat, then eat ten minutes later. And usually I stay at the same weight unless intentionally bulking or cutting.
One exception - I lose appetite when stressed, and rarely but but sometimes have anxiety around eating still. But most of the time, my appetite just follows my calorie expenditure. Can't be the only person like that, it seems a normal state?
I am sorry, that sounds dreadful. Always you have had hunger? Eating does not cause satiation? I also can feel empty without being hungry sometimes, it's honestly a good feeling and best state to fall asleep.
Yes the tuned appetite should be universal.
In the interest of full disclosure - I did reach it coming out of anorexia so not overweight but underweight, but it has settled out to keep me at a healthy size as an adult. Except for a few very stressful years in my early 40s I lost some but bounced back. I think more people, at least in the US, are coming from the other side and I don't have experience with that.
Always. Haven't always been overweight though, that started in my late 20s. When I was young, I could eat nonstop and stayed skinny mostly because I was riding a bicycle nearly every waking moment.