it's actually the only subject i have excellent mark in at school. but the most intersting part for me it's informal american language. i dunno why, but i like it. and the other reason is that i have a desire to move to some english-speaking country like US, Canada, Australia or New Zeland, but not to the so-called country, english language came from, and which is considering to be origin of da language. and i also don't like the britain's accent, it seems weird and plain, and it's not being widespreard as for instance the american. didn't want to offend smb, but that just my lil 'imo'.

for a good future and travelling other country

If I don't study english, I won't be able to understand your question and answer it. It is obvious that english is spoken in every part of the world (despite of chinese language being the most spoken language) and most use to communicate among other nations. Personally, I study english because it is so essential in my job and the fact that it (english) is the second major language spoken in our country. :)

English has adapted as international language. People whom they are speaking the mother language other than English may not be able to communicate with each other. For example: Russian, German, French, Italian, Chinese, Japanese etc., However, these people had studied English (ESL), they can break the language barrier. Study English is to enhance your communication capability ! you are not only limited to speak to your own folks, you can also speak with other people in the world.