I have a theory (half-formed) that we are seeing the results of our always connected society, and a shrinking crowded world and there's no way to escape.
Where a young man could once pack his bags and leave on a grand adventure and start a new life where noone knew him are long gone. He could join the military or sail the seas and see the world and noone cared where he came from and there was no way to know either. But that time is past.