The problem? Young people are terrible at self-reflection. I know that there were many points in my youth when I said to myself, "I know all there is to know about life now." This leads to a kind of privileged arrogance that really can't be fully appreciated until one sees how lucky we are to be able to have the opportunity to learn in such safe, structured environment.
No. Some people, not just young, are terrible at it. And some are good at it. Universities don't change that because they continue to be nannies. If you want people to be able to assess themselves and know what they want in life, you better start asking them to do it earlier, not later.