 The third reason is fireworks can harm you. I know a young girl. This really, truly happened. I was with two other people that were, when I was probably about 20 years old, we were tending a little girl, actually two little girls, and she had on a big, long, flowing nightgown, and she wanted to light fireworks, and her parents were gone, so they asked us to tend her, and she had some sparklers on.