My only advise to you on this question is that don't take it so seriously. This is a question that most people lament, brood, and beat themselves over the head over, including myself when I first started this application process. And really, it is not as hard of a question that most people make it out to be. All it takes is a honest examination of what it was that really sparked your desire to pursue this profession--and I'm sure there was "something" since I can't imagine anyone going into dentistry without really having a natural incliniation towards it. As for myself, when I decided to get rid of all the garbage of "oh, I love to help people, I love to see people smile ect." there really was no BS about why I choose to become a dentist. I like the perks that the profession give: its good reputation, flexible working hours (I'm a woman so that's very important), good financial rewards, requires me using my hands and brains, and amples opportunities for making lasting friendships--all this translate to me being able to live a fulfilled, happy, and secured life--which of course, is what I ultimately want. Also, since I will be well-rewarded financially, I can donate part of it back to my community, be abled to travel to other places around the world and either donate financially or my service--ok, this part sounds like I'm bs-ing but I'm not, it's the truth! So, yes, try not to embellish your reasons for pursuing dentistry too much because first of all you will only be kidding yourself and secondly, the adcom folks will KNOW that you are completely making this up! But good luck and Happy Applying!