English is useful for a wide range of purposes, including:

1. Communication: English is one of the most widely spoken languages in the world, making it an important tool for communication in both personal and professional settings.

2. Education: English is the language of instruction in many schools and universities around the world, so proficiency in English is essential for academic success.

3. Travel: English is often used as a common language among travelers from different countries, making it easier to navigate and communicate in foreign countries.

4. Business: English is the language of international business, so proficiency in English can open up job opportunities and facilitate communication with colleagues and clients from around the world.

5. Entertainment: Many books, movies, TV shows, and music are produced in English, so knowing the language can enhance your enjoyment of these forms of entertainment.

6. Technology: English is the dominant language in the field of technology, so proficiency in English can help you stay up-to-date with the latest developments in this rapidly evolving industry.

Overall, English is a valuable skill that can open up a world of opportunities and help you connect with people from different cultures and backgrounds.