According to Aristotle, a Greek philosopher, man is, by nature, a social animal. The loneliest people are antisocial individuals in any society.
Human brains are wired to depend on social connections to thrive. Whenever you are cut out from these connections, your brain will tend to trigger the feelings of pain and sadness.
Loneliness is a feeling that causes people to feel alone, unwanted, and empty. It is therefore politically correct to say as a human being, you cannot live alone.
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