Debt is a law like gravity. You can have it explained by Ludwig von Mises. It is a reward for risk and saving. Discounted cash flow is actually the opposite and the reason why a cash creating asset, let's stay farmland, still has a finite price but theoretical unlimited future income.
To serve debt you have to create more in the future. Do you know how all our debt will be paid back? With more debt. Once the expected return is 0 then there is no reason to give credit anymore. Every capitalistic system relies on these unfortunate facts.
I like Mises a lot,even if I think his idea of money is plain wrong. But it was Keynes who always saw the end coming. He also gives some ideas in "The death of the rentier".
This is also an interesting post: Wealth And Energy Consumption Are Inseparable http://www.declineoftheempire.com/2012/01/wealth-and-energy-...
or here:
There is No Steady State Economy (except at a very basic level) http://ourfiniteworld.com/2011/02/21/there-is-no-steady-stat...
I am afraid you are the bullshitter, not me.