Let's discuss in English ,then. I won't correct you anyway.

There are often some of arrogant complacent guys here who tried to correct others' English every time the others tried to type in English, PLEASE, DO NOT FUCKING RATE THE OTHERS. 

Why do some Koreans (who've never been abroad or didn't stay long enough --at least a decade) always try to correct even the one who spent whole his life in either the US or the UK?

English is not a fucking political tool to classify yourself and others.