>every anime
literally like 95% of all anime is already translated by some neckbeard weirdos who waste their life translating shit for free, and if it isn't it's probably shit.
>japaneese movies
Similar to the above, if it ain't translated is mostly shit.
>every manga
There's sooooo many mangas, like what you want to read fucking shonen jump on the bus or something? why would you ever want to read every single manga, first of all it's literally impossible, and you already have most of the relevant ones available.
>every LN
Wow I really need to know why Fukuhito san inserted his dick inside Watanoha sama, and what those words between the moand really mean.... and the super sad story about their dog going missing and some other really poor budget made up drama just to justify a plot in some porn game.
>every website
well that's pretty broad, if you are some turbo weeb who actually needs to know what some nips are talking about and machine translation isn't enough... well it could be worth it, but honestly nips are super dumb and super casual, and super awkward and super xenophobic any minor mistakes speaking their language is frowned upon and you'll get ignored and ostracized
>every video game
unless you mean like some niche as fuck RPG that was never translated (Moon adventure remix) you don't need to learn nip just to use menus, fucking videogames are easy as fuck, you press a button an you punch, you press another button and you jump. There's so many videogames to play... how can you run out of games to the point that you need to learn a language just to play more of them.
And most important of all, the time you'll spend studying japaneese, it's less time you'll spend watching anime, playing vidya, reading mango, lurking forums, etc. You'll realize later how valuable that time was, and regret doing it when you stop practicing and all those lessons fade into thin air.
Only learn it if it makes you money, or gets you consensual sex.