Central banks around the world are working on future banking and currencies. Which of course means working with digital currencies and new means of safe, secure and documented transactions. Its all in the works and a currency revolution is on its way. No more printing currency or coinage minting just digital transactions.
Debt is a huge problem right now because of the economic environment were in whereby countries can't generate the needed increase in GDP to service the increased debt. As presented this is the result of still being in the clutches of the economic crisis. So countries lower interest rates which make it free for governments to borrow money to service the debt. I think corporate borrowing ( EU average ) is around 1.95% which is low.