With the science & technological development with the electronic devices ,mobiles & such other development of present century we cannot keep to depend of our mother tongue .
It is in this line a knowledge of English may certainly help for the development of career , &understanding of scientific technical & medical information which may certainly to be guideline for our healthy life .
Learning a new language is an uphill battle with yourself, but it is one of the most self-enriching experiences you can have! I would say it is like brain gym, and a great way to spark your cross-cultural curiosity.