Dunno. Where I am, we have a choice between learning French, Russian, or nothing. Going for Russian, definitely, as it's one of the BRIC languages and it's in demand at the moment (Brazil, Russia, India, China). But one of the things I really want to do is learn Japanese, as I'm fascinated by the culture and I love the music :3
So it depends. If you enjoy it, or if you think it's a great career opportunity, I'd go for it Got plenty of free time...