Why do I need to know if I have pre-diabetes?

To prevent progress. The best treatment for any disease is prevention. If you find that you have pre diabetes and choose to make some changes in your lifestyle, you could prevent progression to diabetes.
Reversibility. This is the best time for you to make lifestyle changes to reverse the course of sugar abnormalities. If you make the right changes, you can go back to normal and not progress to diabetes.
Lifestyle disease. You need to know that it is a lifestyle disease. You need a dramatic lifestyle change. Work with a functional medicine doctor or integrative medicine doctor, or your current doctor to take on the root causes. Your lifestyle is what got you here.