English is a very important language and carries a very big role in our lives. We do not know all languages so English is a useful language if we are talking to someone from some other country. English is used in most of the countries especially in the United States of America, United Kingdom, Australia and New Zealand. English today is probably the Third largest language by number of native speakers after mandarin Chinese and Spanish. However when combining native and non native speakers it is probably the most commonly spoken language in the world.
Many books are printed in English because most of the people living in English speaking countries understand English, it is estimated that around 450 to 500 Million people speak English. Even our school books like our humanities notebook is written in English and not in any other language. Say even the poems and literature are written in English. English acts as a common medium of communication and also the business language of the world. Most diplomatic ambassadors of every country know English and communicate in English.
In India, China, Spain, Pakistan, Latin American countries people talk mostly in their mother tongue or national language only and English is used not frequently. English language is rich with grammar and has dictionaries and thesauruses. English is one of the oldest languages in the modern world.
There are many films, movies and documentaries in English and sometimes the English language is misused in movies by use of half words or foul language. Even students misuse this language when they are angry and say filthy words.
I conclude saying English is a global language and it has a lot of importance than what we think. We must not take this any casually.