Everyone makes good points here, but I am going to also state that I empathize and relate to your need to get out on your own. I went through the same thing, I just really craved more than anything to have my own place and experience being an adult on my own. It wasn't that my mom was unreasonable to live with, and the dorm room in college that I lived in was often miserable due to being kind of junky and the walls so thin you could hear just about everything around you. For a light sleeper and a non-party type, it could be beyond frustrating. But it was my place, and I finally felt fully in charge of my own life. After a couple years, I did end up moving back home for various reasons, but even then I felt more satisfied having gotten out in the world on my own for awhile.

I do understand your parents' concerns too, and agree they are trying to do what they feel will help you get the best start on life. My mom might have done the same, if the college that I had gone to had not been 5 hours from home . Perhaps you can come up with a compromise with your parents, spend the first year at home, saving up, and the second year get a one-year lease and see how it goes. I do understand how you're feeling right now though, and wish you the best in working this out.