Philosophy is intended to systematically and rationally answer questions such as "What is existence, what is life, human, society, truth, the meaning of life..." for the sake of the answer to the fundamental worldview question: "What are the criteria for a right life?"
Why can the question 'What are the criteria for a right life?' be considered the main question of philosophy? Because modern philosophy, recognizing naturalism and physicalism, in general possesses satisfactory answers to the other main eternal questions.
Separating ethics from philosophy to form an independent discipline is impractical, as it's impossible to develop rational and productive moral norms outside of the sections of philosophy closely associated with issues of worldview.
A human still knowingly commits heinous crimes. If education is adequate, they would never permit such actions, for upbringing forms a conscious sense of one's own worth.