The primary benefit of using a password manager is improved security and convenience in managing passwords. Password managers store and encrypt users' passwords, making it easy to generate strong, unique passwords for various accounts without the need to remember each one. This reduces the risk of using weak or repetitive passwords, which are often exploited by cybercriminals. Furthermore, password managers often include additional features like security alerts and automated login, allowing users seamless access to their accounts while enhancing overall cybersecurity.