You know one thing I find interesting is you specifically call out "unskilled job", which I think has a point but the OP mentions specifically his son studying to be a carpenter that I would consider a "high skilled" job, even if it is blue collar, and then you suggest there was a small period of time when an 18 yo could provide for a family with unskilled labor.
I then realized that for much of history up until recently by the time a young man was 18 years old he was already a skilled craftsman at his craft to a large extant. The young man would've been training with his father at his craft from the time he was ten years old and so by the time he was 18 would be proficient in what he had to do.
I wonder then is part of the issue we face due to the fact that we spend so much time trying to instill a modern education into youth until they are adults that they have to spend an additional 4-8 years acquiring an actual skill in order to be able to provide value in the workforce?
I then realized that for much of history up until recently by the time a young man was 18 years old he was already a skilled craftsman at his craft to a large extant. The young man would've been training with his father at his craft from the time he was ten years old and so by the time he was 18 would be proficient in what he had to do.
I wonder then is part of the issue we face due to the fact that we spend so much time trying to instill a modern education into youth until they are adults that they have to spend an additional 4-8 years acquiring an actual skill in order to be able to provide value in the workforce?