Language is a way to understand.
While I learned almost everything about english by playing games (in fact, I have always gotten superb grades in english without even trying (Unfortunately, it has led me to becoming increasingly sloppy while using it)), I have never been that keen on learning the languages in themselves. When I try to learn a language, it has always been to understand. As a native swedish speaker, the only thing that swedish is useful for to me, is understanding conversations and text in swedish, and to understand languages similar to it. I don't care much about the language beyond that.
You could also say that Japanese is the ONLY language that I have taken the time and effort to attempt learn without actually having use for it in my everyday life (if you don't count VNs, Manga, Anime, and other japanese texts, of course)...