Because it's clear (and you may be acknowledging) that violence is the best option in at least some circumstances. Otherwise, prisons, soldiers, and police officers wouldn't be necessary.
For example, if you want to stop a meteorite hitting Earth, do not use rockets attached to its surface, explode a huge nuclear bomb!
If you have to start the nucleus rotation, do not make any chemical reaction or engineering project, just explode a huge nuclear bomb!
If you are a multibillionaire that wants to solve crime, just personally punch criminals in the face!
And we're talking about fiction, not real life. I'm ok with spectacular, but I can't help noticing it :-P
Blowing inanimate things up is just physics.
See, how do you know you dont think that because of decades of the media tell you to think that? Not just that but American culture is gun culture rooted in the Wild West way of things. Look at how the gun nuts can even consider life without guns. Something weird, amusing and scary to many civilized countries.