I think, people should do something they are interested in! Usually employers understand, if you are not interested in the job anyway (some general tips brought about in my hub https://hubpages.com/business/Job-interview-Tips-f... ) So - if you are interested in the subject, you study, and it's a reward already. For example, I found information technology for me and I really enjoyed going to school! Did not think, what to do after school.
Someday, there might be jobs available! And you might get good connections and great ideas from schools! I think, you should study for yourself, not for a job.