Far more people are mentally ill than is obvious from daily discourse. The principle reason is that they are vastly under socialized and their less than able minds are not constrained by continuous training under pressure of peers.
Americans are de facto crazy, where other peoples are de facto escapist, religious, or superstitious. This is because we have attributed to and demanded from ordinary people the agency of the middle, upper middle and upper classes.
And the fact is that the reason people are in the middle and upper classes is precisely because they possess agency that others do not.