I spend a few minutes per day learning Japanese.
It started years ago in university when when I needed a two hour per week course that didn't relate to my major and I wasn't in the mood for public speaking. Out of all the available courses, it was the right balance between interesting and no consequences if I drop it once I have my credits.
Now I'm continuing out of habit and a vague hope that I'll soon have an opportunity to visit Japan. Being able to play some video games with the original voices while not constantly having to read subtitles is a nice bonus.