Why doesn't Jem want to be a lawyer anymore?

In "To Kill a Mockingbird," Jem Finch's disillusionment with the legal profession stems from his experiences during Tom Robinson's trial. He becomes increasingly aware of the deep-seated racism and injustice in society, which contrasts sharply with his idealistic views of law and justice. The trial's outcome reveals to him that the legal system is often ineffective in achieving true fairness, leading him to question his aspirations to become a lawyer. This loss of innocence ultimately shapes his understanding of morality and human nature.