Why do humans feel that kneeling is degrading?

This is a social behavior formed by human beings. Kneeling represents humiliation and obedience, so kneeling is a kind of respect for people who are taller than themselves. If our ancestors expressed kneeling as a friendly gesture, then we wouldn't feel that kneeling is degrading our status.

This is just a social behavior, landlord.

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Ignorants who despise replication streams.