There are three main reasons to learn Symbolic Logic:
1) Clarification of Thought
Logic, while built in to the human mind, can be used imperfectly when students are not thorough and exact in their reasoning. Symbolic logic serves not only to give students a fool-proof way to organize their own thinking but also a sure progression in their ability to think clearly in their daily lives.
2) Thorough Critique of Arguments Received
Students in modern America are bombarded with messages from every angle. Those who cannot clearly recognize and analyze these messages will inevitably begin to hold conflicting truths about any given subject. Anyone who wishes to be understanding in the area of philosophy (including science, ethics, language, etc.) must first master the ability to think clearly; symbolic logic is the first step in that journey.
3) Thinking about Thinking
Many people live their entire lives with hardly a thought towards what it means to think clearly – lives, I daresay, which have missed a critical part of what it means to be human. Students who learn to think about the very nature of their own thought process are students who often begin to question other parts of their own nature. Indeed, logic is a natural starting point for queries into science, epistemology, ethics, and others, in that it encourages students to not merely absorb what they are told but to critically analyze every area of their life.