Why are stored procedures commonly used in database applications?

Stored procedures are commonly used in database applications for several reasons. They improve performance by reducing network traffic, as only the name of the stored procedure and any parameters need to be transmitted instead of the full SQL statements. They promote code reuse by encapsulating frequently used logic, reducing redundancy and making maintenance easier. Stored procedures also enhance security by controlling access to database objects and enforcing data integrity rules. Additionally, they can simplify application development by providing a standardized interface to complex business logic.