The English language is important for many different reasons. One being that it is now considered one of the most widely spoken and understood languages in the world. Of course, the English language isn't the most important one, I believe that all languages are equally important, but nonetheless it is still very important. You can learn many things from any language, and English is no different. It is possible to learn a great deal from everyone who speaks it, which is why it is important.
Hope this helps!