I think that wanting to become a doctor is almost something people are born with. I mean I know it sounds kinda funny but those that truly want to become a doctor have a pretty difficult time explaining why. I think the reason is that it mostly comes from a persons heart and trying to portray the feeling with words becomes difficult.
Becoming a doctor is no easy task. Just getting into medical school is a daunting task let alone the amount of studying, time spent in residency and the grueling hours one spends training.
I personally have many reasons why I want to become a doctor. Yes my first answer is I want to help people, and yes it is true that you can help people in many ways but I think a doctor provides the most direct and critical type of help. I mean how many times have you been in pain and you've gone to see your doctor and after he's treated you you want to just get up and hug him. The healing power of a doctor is almost godly. I don't think any other profession is more appreciated than a doctor because of that fact. We as humans seek help and relieve from pain and suffering when we are going through such a time and the most critical pain and suffering is physical pain and when that pain is relieved we are most grateful.
I think medicine is also a field in which you will be constantly learning new things. Every day we have new procedures, new types of drugs, new types of diseases which are found. As doctors we will always be learning new material and for some people that is an interesting aspect of medicine.
The fact that you will have such direct human contact and human contact that will be constantly changing is also a plus.
The feeling of a child who is dying of cancer who then hugs you and says thank you for treating me cannot be matched by any other profession.
Basically your affecting humanilty, your helping to cure and treat which makes you very powerful, I personally couldn't see myself doing anything else. I have my background in engineering, I make good money but the satisfaction of becoming a physician is undescribable.