12 reasons why you’re bored with life

Evolutionarily speaking, this makes sense. Humans, like many other animals, crave novelty; we're neophiliacs, or lovers of new things. Novelty helps us learn things, and from a very young age we seek out new experiences and things to interact with. Studies on the brain have revealed that we respond to completely new stimuli with a flood of dopamine, a "reward" that makes us feel good. It's part of the reason why humans are so curious: we're always on the lookout for things that give us that flood of good feelings.