Well, in a very short response, if you don't enter the labour force and get engaged in a career path where you're building skills, you end up sucking the life out of the economy. It erodes productivity, the long-term wealth creation capacity of the economy. As taxpayers, we end up having to support them either directly or indirectly: directly through income transfers; indirectly through other forms of social support. It's imperative that we find a way to bridge kids from school into the workplace as efficiently as possible.
I like Brian's ideas very much.