Of course it won't matter if the planet burns. But as a great philospher once said, "until such time as the world ends, we will act as though it intends to spin on." Destroying art can't be undone. Throwing hand grenades at yachts would be way better, assuming nobody gets hurt. I still don't condone it (because somebody will get hurt), but nobody is going to give a shit if some asshole's yacht goes to the bottom of the marina.