Biology or Business? What's it going to be?

I have been contemplating the issue for a ton of semesters now on "What do I really want to be when I grow up?" It sounds a little funny coming from someone who is already about to start his junior year next semester. Now that I am taking the fundamental classes I feel that Biology is where I need to be. I have always seemed to have an interest in what Biology has to offer. I have really loved helping people and figured that Health Care may be my specialty. I have weighed out my options and decided to go to PA (Physicians Assistant) school. I see the business world and really it scares me to think of the ups and downs that might occur over the next few years. I see it as being something very stressful for one who is in the ever changing world of business. Do I really want to end up feeling like this guy? I think not. I want to help provide info to those seeking it on what it takes to become a PA.