Have you worked in a restaurant or retail? No one gets more abuse than those workers.
The real reason we want teenagers in low-skilled jobs is to keep wages low. That's it. Not tradition, not social cohesion, not to teach anyone "responsibility" or "empathy" but simply to undercut the labor market, because if more adults worked those jobs, they would be paid more.
Yes, both.
> The real reason we want teenagers in low-skilled jobs is to keep wages low.
Who are you speaking for? Do you own a business that employs low-skilled labor?
The fast food industry wouldn't exist if it was treated as serious work for adults. But it's considered pretend work for teenagers to learn to build character on or whatever, so it's fine that it barely pays a subsistence wage.