coally brim reason for learning a language, generally you should have a tangible use for the language you're learning (and especially a use case that you can do NOW) that way you can continue to use it even years after you lose interest in actively learning it. case in point, both of my parents learned german in high school and entirely forgot it by their 50's because they had literally no use for it being that they live in rural america and don't consume media in that language.
in your case, probably the only use case i can think of for japanese is watching tranime without a dub and perhaps activities involving the pestering of chinks online.
for my target language's usecase, its so i can pirate anime off rutracker without using google translate
even THOUGH i have never watched any tranimes