I would never put all my eggs into the aviation career basket. Even if it was 100% your passion. Get a degree in something useful or sought after (engineering, finance, etc). If you fly in the military, flight trianing is cheap. When you get out you will know if you want to do the airlines or go get a real job. People I fly with who have done nothing but the embry riddle or wherever (insert aviation degree college here) and professional flying usually have a lot of debt and have nothing to fall back on when they lose their medical, realize this job isn't what they dreamed it would be, 9/11, etc. etc. Always leave yourself multiple options if you all of a sudden have to leave the profession.