I agree. I think with the new functional MRI and other brain imaging techniques, medicine might finally be able to get a grip on mental illness, its causes, and specific drug targets to treat it. Electrode implants have been used now for several indications, but they are a last resort as they are in fact brain surgery!

On the "abuse" angle, a book came out almost 40 years ago called The Terminal Man by Michael Crichton: VERY far ahead of its time!