Currently it's believed that English is spoken by some 1.75 billion people worldwide– that’s one in every four. By 2020, it's estimated that two billion people will be using it – or learning to use it. It's the language of shakers and movers, leaders and youong people. They are talking to each other more and more and English is the ‘operating system’ of the global conversation.
It's amazing, but true, that non-native speakers far outnumber native speakers today.
English is the dominant international language of the 21st century. It is used as the 'lingua franca' between nations where English is not the primary language. Learn English!!