I'm going to take a slightly more philisophical approach to the question...Well, it certainly isn't money, because there are much easier and quicker ways of making large amounts of that. Generally, we all want to help people, and though we have lots of doubts, we feel we can be good doctors some day. I think you will find here that many people, myself included, have always had this feeling in us that told us medicine the right thing. That's always been my case, but it isn't always the case. Many people are into there thities and even forties before taking the pungs into medicine. I think that if you can look many years down the road, and the money, energy and time that it will take to achieve your goals, while daunting, doesn't stray you from what you want, then you know it's the right thing.