I think if an adult didn't have an education it would definitely make it harder on them to survive, however there are some cases where society isn't based on what you do or don't know.
The point of learning is to gain knowledge and insight to the questions we have, in order to gain reliable answers and give reliable answers we must teach ourselves to grow past what we already are and strive to become more. The purpose of learning is to become more than you already are and to create new and exciting ideas, theories, and technologies.
