What's causing fireworks and sparklers incidents lately?

Perhaps you might not like what I'm about to say but I have experience with some pyrotechnic devices (only the small ones though) and sparklers since I was 10. Nothing ever happened. Why?

I've never picked up a used pyrotechnic device from the streets, used gloves when handling a sparkler, there was always a bucket of water and hose in handy, never returned to a lit firework, etc. I've basically followed all intructions. I stay away from the bigger ones. My uncle is the only one that handles those from a distance.

So why are there so many incidents? How hard is it to follow instructions and use common sense?

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I would follow all instructions even as a kid.
What's causing fireworks and sparklers incidents lately?
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