Banks should really be scared of bank runs, if everyone took out their money at the same time. It would expose how they run on unsustainable fractional reserves and exorbitant fees. They are "good" at lending out that isn't even there.
Won't banksters just print more of their filthy fiat out of thin air? Ain't that what they do?
I'm not in a position to have a proper say on that statement, but in my opinion, not all banks do that. I know a few good banks who just rather closed down than print dirty money. I think only the greedy banks would print out money to sustain themselves.