> There’s gotta be some reason for the mental health crisis, along with all the other crises out there.
Evolution adapted you and everyone else out there to live in a small band of 50-200 people who only had occasional contact with other bands of about the same size. You do not have the psychological machinery to deal with more than that. Because humans are intelligent, and can learn to compartmentalize, we've scaled to a global civilization of 8 billion, most of whom live in constant daily contact with thousands of others, including direct contact with strangers.
This causes psychological malfunction, especially in those experiencing other sources of stress. Non-genetic hereditary factors contribute greatly. Cycles of abuse, dysfunction, and so on.
The world population has doubled even since I first learned what it was in grade school. And, soon enough, it will crash in the other direction, further confusing and causing strife.
Humans don't scale.