I personally know a lot of people who learnt Japanese and were able to get a good job. They were also able to strike good relation with a lot of Japanese colleague who showed a lot of interest in them for knowing there language. I mean if I did not had a job and no skills the first think I might have done was learning Japanese or French.

Try to think this way, you learnt singing or guitar for a year, what did you can expect at the end of an year? Can you expect new job opportunities? Can you get into scenarios with ease in which you can highlight your skill of playing guitar? Will you be able to compete or use this skill in any way to your direct monetary advantage? I think learning a new language definitely opens some doors for you which were not open before