I don't think you are being unreasonable. Tonight on BBC news the chart only showed working age people.
It is very worrying that such a high percentage of working age people are on benefits for psychiatric conditions. Those who are young adults will be running the country in the future and that is as worrying as the cost of benefits.
How many of those are young adults diagnosed as children with conditions like ADHD? Are we labelling children at school which will follow them all their lives?
How much of that is due to overworked GP and almost non existent psychiatrists?