RE: Biology vs. Marketing. Should I major in my parent's choice or mine?

my questions needs editing so i repost it…..

My parents wanted me (actually forcing me) to major in biology to become a doctor, nurse, pharmacist, etc. That way I can make more money ‘especially in this economy’. My parents are both accounting and nursing. (I figured they mainly wanted someone in family to do science since my two sisters are in law school to become a lawyer or an attorney, they’re pressuring bio on me since I’m the baby of family).
However I wanted to major in marketing to become a realist and entrepreneur. I have interests in creativity and art. And I would rather major in any career that involves me doing something I love best. So with marketing I’ll at least use my creativity to plan, build, and to create ads.(knowing my folks, if I decided to go major into a career as an artist or a fashion designer, they probably wont agree and say that I wont make money or go anywhere in those areas. That why I went with marketing at least). I told my dad this, but he said I’ll make more money in nursing then in business and that frustrates me. .
I hope majoring in bio doesn’t mean I’m entitled to such careers like doctoring. I’m feeling so overwhelmed at this point…. Also how do I connect biology with creativity and art!?