This is very simple and easy: most of the content available on the Internet is in English. Many websites have been created in English and have been translated into other languages, but many companies do not care about translation because many people are good at speaking English. Proficiency in English will allow you to access information that would not have been available to you otherwise!
Another reason to learn English, and perhaps somewhat unexpected, is good memory! Some evidence suggests that being bilingual (and even merely studying another language) may protect your mind as you get older, people who know more than one language develop some kind of dementia five years later, compared to those who speak one language.
Why is the English language so important? One in every five people in the world is fluent in speaking or at least understanding the English language. There are more than 400 million speakers of the English language in addition to being one of the official or main languages ​​spoken in more than 50 countries. While Chinese, Spanish, French, even Russian and German have many speakers (their mother tongue) and with the importance of these languages ​​expanding in the past few decades, the English language has remained the smallest common denominator for meeting people and working with each other around the world.
Another important reason for learning the English language is your increasing opportunity to get a good job in a multinational company or to work abroad. As it is the business language, it is important for employees to speak the English language when dealing with other colleagues in other countries and with international clients. This way, you can find that speaking English may make your career more difficult, so start learning now!