Hadn't considered that -- but has there been a rise in childhood psychological trauma? There's definitely been a shift in the way we talk about trauma, just in the sense that we open up about it more, so that could be part of it.

The example I'm coming back to though are people like my younger brothers, who had relatively happy childhoods (afaik), but still have failed to launch for some reason or another. To be fair my father has anger problems to some degree, but nothing too crazy, just a proclivity to yelling more than was really necessary.