It helps us assess how well our premises support our conclusions, to see what we are committed to accepting when we take a view, to avoid adopting beliefs for which we lack adequate reasons, and to discover unconscious assumptions. Philosophy of Language has grown out of studies in logic. Metaphysics seeks an understanding of what sorts of things are real. Are there mental, physical, and abstract things. Philosophy of Mind and Philosophy of religion are important subfields of Metaphysics.
Epistemology concerns the nature and scope of knowledge.
Philosophy of Science is a branch of Epistemology. The History of Philosophy studies major philosophers, significant periods in the development of philosophy, philosophy in individual nations, important philosophical movements, and the relations between philosophy and the wider culture. The problem-solving, analytical, judgmental, and synthesizing capacities philosophy develops are of wide scope and use. This makes philosophy excellent preparation for positions of leadership. Wisdom cannot be guaranteed by any course of study, but philosophy pursues this ideal systematically.