Why become a doctor?
Why become a judge?
If it's only for money, you'd better be a businessman.
Both doctors and judges control the fate of others, and the slightest mistake may ruin a person's life.
Even those who study justice are generally unwilling to be judges, and their responsibilities are too heavy. Prosecutors can punish evil and promote good, and maintain society. Lawyers are the most professional and authentic elites in the judicial field. Lawyers are divided into small groups. First-class lawyers rarely get involved in areas they are not good at. Lawyers are often transferred by prosecutors, or assistant lawyers climb up, and some are transferred by judges (judges choose people with good judicial performance, but their actual combat experience is quickly pulled away by lawyers. Judges sometimes act as prosecutors and lawyers, which is not good. It is a big problem for judges, prosecutors and police to unite, but civil servants are a huge organization with a lot of troubles, and criminal lawyers can reverse their cases on the premise of being extremely unfair. Of course, most lawyers don't like troublesome cases such as criminal marriage, and everyone likes to engage in commercial lawyers (especially cases such as patents and corporate mergers and acquisitions).
There are many kinds of doctors, such as pathologists (life judges, medical judges) who don't have to face patients, and the most common ones are surgery, internal medicine, pediatrics and psychology. Of course, there are many subdivisions. The question is, what do you want to do? Brain department? Cardiology? Otolaryngology? Dermatology? Liver department? Infectious diseases, etc ...