Because the expected answer to this question is always a type of job, it reinforces the idea that the way to find identity and value is through career. Our society is already saturated with messages that the title on your business card is directly connected to your worth as a human being. When kids are bombarded by the questions about which job they’ll eventually hold, it trains them to view adult life through the lens of their place in the workforce.
Read more. It's a an excellent point to ponder.