Please help me, I have a huge moral question...?

Ok so basically this is my story. Next year I will finish high school and be off to college hopefully majoring in engineering. My parents (Asians) say they completely pay for my college education, rooming, and textbooks. However once I finish college, they will basically guilt trip/force me to stay in Richmond, VA for the rest of my life because they claim that it is the "morally correct" way for me to repay them. I love my parents, but I don't want to spend the latter part of life in my hometown because there is absolutely nothing to do in Richmond VA economically and socially wise for a fresh college graduate... (Richmond is mainly a senior/family town) Also for what it's worth, I have been working for my parents in our bakery for 6 years w/o pay so I help earned money for my education as well. I mean, I really do care and respect my parent's decision, but I want to go out and live my own life and see the country/world. The other option I have to enlist in the NROTC scholarship program, in which the navy pays for my education and in addition I will be an officer and engineer for the USN. I feel really strongly about this option because I am really interested in the benefits and challenges that Navy will present to me. I also enjoy seeing different countries and being out at sea. But...my parents do not support this because I will most likely be abroad for months and won't be able to support them. When I graduate from college my dad will be 70 and my mom will be 61. They speak English but not incredibly well, in addition my mom has a brain tumor but fortunately is relatively stable both physically and mentally. She is a strong woman. So in general the question is, I want to help my parents because their are aging (in addition to them guilt tripping me about $$$), but I also want to move out off my hometown or Richmond and live/enjoy my life. What should I do?