The fact that public debt in its totality will never will be zero, doesn't mean that the tenants of that debt will not receive what they were promised. In fact

The fact that public debt in its totality will never will be zero, doesn't mean that the tenants of that debt will not receive what they were promised. In fact, you probably don't want the public debt to be payed. If debt is a liability, that means that is also an asset of somebody. In the case of public debt is an asset of the private sector. A country without public debt would mean those senior citizens wouldn't have safe assets. Also, a reduction of public debt means a lower deficit, that means less public expenses, that means, or a GDP fall or a higher private debt. Everything has to balance.