Why do you need ORM tool like Hibernate? | Java Hibernate

ORM tools like hibernate provide following benefits:
•    Improved performance: Lazy loading, Sophisticated caching, Eager loading
•    Improved productivity: High-level object-oriented API, Less Java code to write, No SQL to write
•    Improved maintainability: A lot less code to write
•    Improved portability: ORM framework generates database-specific SQL for you