: While it causes stress, high neuroticism makes you hyper-vigilant to danger—a trait that kept our ancestors alive in predator-rich environments.
Your unique personality isn't a glitch—it's a feature. A diverse population is more resilient because it has a "tool" for every possible environmental challenge. The Evolution of Personality and Individual Differences
If the environment stayed the same forever, we might all become one "type." But the world is constantly shifting. ensures that different traits are favored at different times: