I'll agree with that. Our current state of civilized development and social engineering fairly preclude our ability to effectively deal with most of the mental physiologic problems we generally contend with on an internal level, so external manipulation of the chemistry/physiology of our bodies seems to be the only method that will work for most of us. So long as our society insists that pharmaceutical treatment is the most effective approach to dealing with our afflictions, I wouldn't expect any other process to work, at least not in a general sense. I think it is in error to conclude that such correction is not possible. We simply have not fully explored the potential. There is, I believe, enough anecdotal evidence to strongly suggest that at least some of us are capable of physiologic manipulation without the aid of external remedies.

That it doesn't work that way now doesn't mean that it can't, just that we perhaps aren't ready for it yet.