He may have been a young man if you look only at his chronological age. He was, however, emotionally, still a kid. How does this happen? In the old days, we would have referred to this guy as a 'spoiled kid'.

You cannot spoil a child with love and attention but from the reports I have read, he was well taken care of and showered with everything money can buy. He didn't seem to have any personal pride or sense of responsibility. Where did he get his car? Doesn't seem like he earned it. No mention of a job. College? Maybe a month before he dropped out. Military? He was discharged after a very short time. Makes me wonder if he contributed to the household in any way. My guess is he never even took out the garbage.

I have no problem with children living at home if they are attending college or university or if they are contributing to household expenses but, like so many affluent families, this guy seemed to think he needed to contribute nothing to his family or to society.

There's a reason mother birds push their babies out of the nest.