&quot;They are using money today which must be paid back tomorrow.&quot;<p>That reasoning doesn&#x27;t support examination.<p>The adults of today use the real resources of the economy of today. The adults of 50 years from now, will use the resources of the economy of their time.<p>If we are worried about the people of the future, we will try to create real resources (knowledge and technology specially) that they can use, and we will worry less about debt. In fact, we should be using debt to create those resources as fast as possible.