It's yet another facet of the constant infantilization of young people. They're not really given a chance to grow up. All of the TV shows, films, etc are a constant rehash of things from their childhood, the bands they listened to as kids never really stop, they're not paid enough to take on adult responsibilities like mortgages or having kids, and, it seems, they're still expected to drink sweet, sugary crap instead growing into adulthood with a good Rioja like they ought to.