@emanresu now that I think about it, it does. There are a lot of pros with living with parents, mainly financially, and compared to living alone you don't have to take care of the house by yourself, plus you inherit the house when they die.
@Emanresu
The funny thing is I vaguely recall that it actually is a marketing scheme like most of modern culture. Go back more than 3~4 generations and you won't see people getting kicked out at 18.
It's all about leaving a completely unprepared adult the chance to get into lifelong debt before they now better.