Aren't most mental disorders just behaviors that differ from the norm and make it difficult for those people to function in everyday society? Some cultures wouldn't recognize some things as a disorder if it wasn't difficult for those people. My point being that I don't understand where you draw the line. If someone had such a need to wander the world that it meant that they couldn't live properly in modern society th…
The line is drawn once it becomes dangerous for people around the person, or the person itself, or when the person is suffering from that condition (and not just "society misunderstanding him").
For instance, I have been the focus/target of a schizophrenic person whose condition was abruptly worsening at the time. He became a danger to me and my significant other (we are talking physical threats, punching walls, etc.). It escalated with him going to the police to file a complaint against me and two other parties for computer fraud which I only learned 6 months after he had gotten out of my life.
So, that's why mental disorders aren't just "behaviors that differ from the norm". I wish it were just cushy misadaptations but it's not.