The Hitchhiker's Guide to the Galaxy actually explored the concept. One planet is in a dust cloud. The sky was completely black, and thus the people of that pl

The Hitchhiker's Guide to the Galaxy actually explored the concept. One planet is in a dust cloud. The sky was completely black, and thus the people of that planet led insular lives and never realised the existence of the Universe. They eventually built a small ship and managed to exit the dust cloud. Upon first witnessing the glory and splendor of the Universe, they casually, whimsically, decided to destroy it, remarking, "It'll have to go." The race changed from a peaceful one to the most violent warfaring race of the galaxy.