I'm almost done with my degree but I hate it?

I'm doing my bachelors in International Relations in the University of Edinburgh. I know it's a great university and all, but I HATE MY DEGREE. I studied so hard last semester but my low grades are really demotivating me. On top of that, every year there is so much I hate about my degree. It's all theory, it's all reading; there is NOTHING practical about it. I feel embarrassed when I say what my degree is. On top of everything, I am a full international student, so it's a waste of ALOT of money. I am done with my 3rd year of 4th now. I feel like I won't be able to get a job as I do not know what I want to do with my life, and I am going to be stuck with this ridicioulous degree. My parents tell me to suck it up and finish it but I am so depressed. Seeing my friends who have graduated over a year ago with no jobs because of the lack of jobs in the market makes me even more depressed. I really don't know what I should do. Ideally I would have liked to do a business degree, but it might be too late. I am already 22 years old...