Modern technology is amazing! I have at my fingertips, all kinds of great language learning tools. Now, the question is how to use them and what language to start studying.
Pros: I'm going to be living there next year so it'll be useful, it's closely related to Korean (grammatically) so it shouldn't be too difficult.
Cons: it really is actually difficult; multiple alphabets, no direct teacher to help me sort through the complexities.
Pros: beautiful language, useful throughout Europe, friend here that speaks it natively and can help, I've studied it once before so I have a head start.
Cons: no direct usefulness, no definite need/future usefulness (i.e. I doubt I'll be visiting a French speaking country any time soon).
Any other language
Pros: joy of learning a language
Cons: no plans and probably no teachers, unknown future usefulness.
Still haven't made a decision I'll post more when I decide.