This is doing my head in. If bonds have negative yield, if you...

This is doing my head in. If bonds have negative yield, if you are paying banks to hold your fiat currency i.e. NIRP(I realise that Australian banks still pays interest, but not much) and we can't forget Bernanke's helicopter money!  Then would it be right to conclude that the paper currency you hold is technically worthless? Money can never go to zero?
Therefore the masses have been deluded into the biggest con game/Ponzi scheme in history. This makes Madoff  look like a Saint.
I feel nauseous thinking about it. Am I being too skeptical or reading too much into this or not understanding it correctly?
On the other hand if you hold physical Gold & Silver and Gold miners????