I have a PhD in political science. That was 3 years of coursework and 3 years on the qualifying exams, research and dissertation to finish.
In the last semester of my coursework, I realized that I should have been getting a PhD in economics. I talked to all my professors. I could have done it, another 1.5 years coursework. I'd be another 20K in debt ... but all of my professors advised against it. They were of the mindset that a PhD was good enough regardless of the discipline and that I'd be wasting time to start over.
My discovery of what I thought was the first and only A derailed all of that, but I think my professors were wrong.
Post BA, no degree is worth it unless it leads you exactly to where you want to go. If the program you're in does not lead you directly to where you want to go, it's not worth it.
(For the record, I made it work and my PhD payoff was only in the salary bump I received at my current job, in every other respect it was a waste of time/money. But damn, I still read all the econ blogs, keep up with all the research, wish I had followed through ...).
Library science at the university level does have research incorporated into it. I myself used the librarians' help extensively when getting my doctorate. And their help was research in the purest sense. They helped direct and find data for my inquiry, they didn't have to write it up. Library science, over coming the propensity to wikipedia and google it, seems like it'd be a dynamic field at the moment too.
The writing part of research, whether it's reporting to the end user, or having to write for a grade or publication sucks ass if you don't like writing or you don't like your topic enough to have something to say about it.
And if you aren't enjoying the arcana of law, you aren't going to like legal research. The fun of legal research is in tearing apart the law, making the legal argument, writing the brief, supporting the case and hopefully victory for your client. That's exciting stuff ... but ONLY if you love it. Otherwise it's just pure drudgery.
My not so unbiased advice is to switch programs now. You only have one life to live so spend it doing something you like.
[This message edited by cayc at 10:00 AM, June 8th, 2014 (Sunday)]