/vr/ - Retro Games

If you're already an English speaker and wanted to learn another language gauged on how "useful" it is, your only real options would be Chinese or Spanish.

I dunno about you, but Japanese is far more appealing to me than those languages. Not only is Japanese the prevailing language among my hobbies, it is also much more interesting and pleasing to read and speak than either Chinese or Spanish. There are 120 million native Japanese; if you're so concerned with things like using the language for financial stability, there's no short supply of translation jobs or other professions that might need someone fluent in the language.