Encryption in messaging apps is crucial for ensuring user privacy and data security. It protects messages from being intercepted or accessed by unauthorized parties, maintaining the confidentiality of conversations. By converting plaintext into ciphertext, encryption allows only the intended recipients to decrypt and read the messages. This level of protection builds user trust and encourages secure communication, especially for sensitive information. Moreover, strong encryption protocols safeguard against potential cyber threats, ensuring that personal data remains secure and private even in the face of evolving security challenges.