People are different. Weird, right?

I have a friend who was literally ordered, by a doctor, to eat as much fat as they could because they were too skinny. They're the type of person for whom food is 100% fuel and they can just stop mid-burger and not eat the second half because "they don't feel like it".

I'm not like that. Leaving half a burger that I paid for on the plate is something I've never done or even considered a possibility that any sane person would do.