By communicating with an audience, you learn how to relay your ideas to the judge through a coherent and understandable fashion. These communication skills are essential in the real world, where you are expected to communicate with your colleagues.
Through hours and hours of work for Speech and Debate, you learn how to manage your time between Speech and Debate, school and other interests. In school, time management allows you to allocate time for important priorities. It also helps with future social and career success. You can buy materials, but you can’t buy time.