I would say in your shoes, don't just go to university for the sake of it. Having a degree isn't a guarantee that you'll end up in a better job than you have now. Ideally, you need to have more of an idea of what you want to do after uni so that you do the "right" course. Uni qualifications without that will just land you in debt in three years' time, for potentially no reason or return.
Having said that, it's OK to study for the sake of it, because you love studying or you're fascinated by your subject. However it doesn't sound like that's the case for you.