An established scientific study can be named and rewritten in other languages after its discovery or invention by scientists. But, the research currently going on or some of the aspects of the high order research did at the latest can be published in English only. It is highly difficult to carry out the study in the native language at post graduation and at Ph. D level. Studies dealt from schooling till under-graduation carried out in native language is difficult to be shifted abruptly into English medium at the post-graduation level. It has to be done inevitably in English medium. As it is the stage where knowledge has to be shared frequently with everyone in the world in the form of continuous research higher education has to be in English medium. So, it is important to learn English in some part of your life, if not in the childhood.
Learning English will make you to be accepted by everyone in the world and you will have better opportunities in many locations in the world.