They aren't prohibiting it, they are putting an age limit on it in the same way we do all the other things you listed. Kids are not developed enough to self-reg

They aren't prohibiting it, they are putting an age limit on it in the same way we do all the other things you listed. Kids are not developed enough to self-regulate, I have watched my kid eat tons of sugar then feel terrible a few hours later and be totally unable to connect the dots between the behavior and the outcome. Their brains are not developed enough to practice self-control with highly addictive things.