No wrong answers I'm sure all of us have been in the situation as adults it's a taboo to question someone else's parenting skills. I'm sure some of us have thought one of these.
[spoiler] when I say child I'm talking about the ages of 6 to 15.[/spoiler]
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As someone who worked in a grocery store and fast food for years, I can't really recall children being that spoiled. In my experience, children have actually been more thoughtful and understanding of how the store works than adults. On the other hand, I've had many adults (especially senior citizens) have temper tantrums, scream at people, and throw things at others, at machines, or on the floor. To further pull in the point, it's never been a child that's taken a shit on the floor/smeared it on the wall.