The very human institution of religion, being one that thrives on power and authority, owes its immense longevity on the exploitation of said power, whether physical or emotional.
To survive for as long as it has, religion has numerous in built mechanisms that make it difficult to shake it off once imbibed. This usually involves the threat of violence, physically, or emotional turmoil that wears down the human body’s will to resist and keeps you entrenched in the clutches of the doctrine.