When a person truly sees through human nature, they often gradually become distant from others, not because they don't fit in or are extreme, but because after seeing too much hypocrisy, scheming, indifference, and fickleness, an instinctive self-protection arises within.

Many times, the darkness of human nature does not appear dramatically, but is hidden in details, hidden in face-turning over interests, cold eyes in times of despair, and maliciousness without warning.
You think the world is full of warmth, but the more you experience, the more you realize that while goodness certainly exists, it is rare and precious;
More often, it is complex, realistic, insidious, and unpredictable human hearts.
So some people become increasingly quiet and prefer solitude, not because they dislike the world, but because they finally understand the world.