Learning the Korean language is no easy task. And, if you never talk to native Koreans, then you'll never need it, as the only Koreans who will be willing to talk to you are the ones who can hold a conversation in English, most of the others will giggle and run away in shame. Still, it only helps when you know the language, and I think it is at least courteous to know something in the language of the country you live in. The only downside I can see is that you easily know all the bad things people say about you, but often you have to smile and pretend you do not. You can often find language exchange partners or sign up for a class, or if you are truly diligent, learn on your own. I can have some general conversation now, So lets start with the basics