Eh, once it's to the point where it's used to relieve headaches, then medicinal use and recreational use will have effectively become the same thing. Some lawyer in California got a prescription for stress relief. Stress? Who doesn't have any stress in their lives? EVERYBODY has stress in their lives, at least from time to time. Medicinal use is the doorway through which recreational use might eventually walk. Hell, for that lawyer and his stress, it's already here.