It is important to learn and understand English because it has become a medium and basic language of every software and technology in the world. English may not be the most spoken language in the world, but it is the official language in a large number of countries. In this upcoming world, we must keep up with the technology to become better and to keep up, we must understand how it works. Almost all the explanation behind all this is in English.
English also the dominant business language and it has become a requirement for people speak English if they want to enter the global class working and research from all around the world. Even in the global market of today, English is used as a medium. In order to communicate with the rest of the world in terms of business, English is very important.
Last but not least, nowadays, many of the top films, books and even music are published in English. If we cannot understand the language of these entertainment, how can we enjoy and understand it. It is important for us to understand and explore the world of entertainment outside our language to understand cultural differences and to better our own way of life. There is no benefit in staying ignorant in our own comfort zone. To understand the world, we must explore other's language and understand their way of living.