to this:

Why should a healthy child not eat a favorite soup?
Why should an adult?

Yes, because the adult has assigned this duty to himself (useful, nutritious, etc.), and the child is suffocated by the adult by force. And it begins: the first experience of confrontation with violence, the understanding that adults are indifferent to your desires and feelings, learned helplessness (this is a term such as when there is nowhere to run, and then they do not run, even if there is a place to go), awareness of the injustice of the world, injustice, the acquisition of the skill to deny in general everything that adults offer (including knowledge). Many break, do as they say, and then the aging parents in horror: How was he seduced into this sect (band)? Why does he listen to them? They are accustomed to obeying. I’m not talking about obesity and diabetes from the sweet habit of eating everything on the plate, no matter how much there is. And I’m still a biologist, but psychologists would add a lot more.