A number of people said "They were when I was young, but not anymore," and that was my reaction too. I absolutely loved playing with firecrackers or making little explosives when I was a teen, so the 4th was really fun for me.

It's hard to say why I don't feel the same way now, but I think part of it is just that I've seen it and done it over enough years that it's boring now. The other part is that, like most kids, I didn't think about the broader impact of things as much as I do now. Having known people with PTSD from military service, and having pets that are absolutely terrified of the explosions, it's hard to enjoy them now without thinking of the suffering. Also, I live in parched Southern California close to the hills, so the people lighting giant fireworks in their back yards around me is infuriating.