English Imperialism

In Japan, English is a dominant second language, a lot of people learn it. It's a compulsory for middle school and high school student, and this year, the 5th and 6th of elementary school were added. The importance of being able to use English is increasingly high.
I think this is not that bad, I would want people in the world speak one unified language, and that is English, I guess more and more people will speak English in near future. But one thing that is concern to me is that in Japan, people tend to learn English for English, meaning the English language itself is their goal. People extremely care for the score of TOEIC, or TOEFL tests, or going study abroad for language. I wouldn't say these are bad, if people like to take test or learn language itself like their hobbies. But for most of people learn English, English should be the vehicle go to places where they couldn't have been. English can broaden the horizon of your world. For example, I now watch the series of lecture of Computer Science from Stanford University that is free online, I could not have even taken this class if I didn't use English at all. With the advance of Internet, now we can access to everything in the world that we couldn't have. The world of Japanese is just part of the world. If you did really hard just to buy the vehicle, you are out of money at the destination, you just drove the car. If you have something to give or impart, you will have fun there. Therefore, you should learn English and your major at the same time. Ideally, at the same time doing same thing, for example, watch lectures that features your field in English, reading books of your major written in English, etc.
People urge each other to become being able to use English too much I think, some companies started requiring their employee to use them, and being just able to speak English is now kind of status let alone the real quality of people. Let's think about it again, why are you studying English? And what do you have using English? Isn't is waste just chatting with people in English???