This argument fails when you say there is no proof. This is where anti-psychiatry (in my opinion) falls apart. Lets take depression for instance: people who experience depression for extended periods of time experience changes in brain structure. Shrinkage of the hippocampus can lead to memory problems, learning issues, etc.. These discoveries have been found using MRI technology, and it’s reported in any major medical journal. True there is no bio-markers to diagnose depression, but that don’t mean there won’t be in the future. Now if you don’t want to call the shrinkage of parts in the brain an “illness” fine, call it lets say “just part of the human condition.” but the at the end of the day whatever you call it doesn’t change the fact that biological changes are present, and the person going through it is suffering. The challenge I think is to find more effective ways to relieve the persons depression, while drugs work for many, as you know, it can hurt people as well. Just as they have left me disabled.