Genetic prehabilitation could save your life through informing you (or your parents) of an inherited genetic predisposition. Aside from the purely clinical use - you might consider how you would alter your lifestyle in order to optimize an inherited strength. At the very least it would provide you with a "map of probability" so that you are not wading about blindly. Governments around the world should take note of genetic prehabilitation as a potential way to save millions of dollars in healthcare through prevention of disease, rather then reaction after the fact.