Do I need a doctor?

I'm healthy. Do I need a doctor? You may ask yourself from time to time. Yes, of course. Even if you're a doctor yourself, you still need another doctor to take care of you sometimes. Different from ancient times, a modern doctor is responsible for not only diagnosis and treatment but also prevention. You may read the Internet and try to be your own doctor. You still need professional help since the medical information is very complicated with full of pitfalls. Besides, your doctor would have more independent judgment than yourself.