Funny ... that's why I was studying Japanese twenty years ago. It was interesting, anyway, and I still remember how to say, "Where is the bathroom?" and, "Shut up and die."
Demography has swallowed Japan, and it will get China, too. Probably quicker than Japan, because China has a deadly residue of Marxism stifling true economic freedom.
Learn a foreign language simply for the pleasure of it, or study it because it's required for college. English is the future that matters, because it's a better language, from a practical standpoint, than the alternatives.
ALWAYS remember to say O- in front of toeri (that was toilet, right? It’s been WAY too long for me). My teacher said that the O- made an “unpleasant” word more polite.