Why should we learn English as Lingua-franca or formal English?

Maybe the question in here is, Why not? I know that talking in another language may appear or feel weird at sometimes but that only happens because we are used to talk in our native language. Now, the reason to understand why is it important to learn English is basically statistical, as you know, many people currently speak English which means that this language is taking a major role in the world as a "must have learned" language. Seriously, if you were in America, with no map or nothing, just your natal language, let’s suppose Spanish, you'll happen to be lost in a world where there's no help coming.

English is useful all the time, it is important to have this as a Lingua-Franca because it's just an important, must learn language, just see the facts, many people speak English, online videogames are mostly in English (no Spanish subtitles or other languages), office computers may contain English translated software and many instruction booklets appear to be printed in English leaving you with no capability to understand operation procedures and precautions.

To end this, let’s just say that English as a Lingua-franca is just too important to ignore, the experiences you get from travelling around the world will be recompensated with joy if you happen to be a socializing person, of course!

English is LIFE!