When we start to do something we need to know "why" and what is our goal.
In my case I really love to study English because learnig this language I can know different kind of cultures. With English language I can speak and try to understand a lot of people around the world. I can read papers, articles, news, .... And after all, it is very very important in my work, I need to write messages, papers, attend some lectures, and so on.
Ok, that's all.
Hugs from Brazil