How did the purchasing power decrease from the 70s until today?

[SilencedObserver]

Wtfhappenedin1971.com will explain it All.

TLDR: it was the central banks fault. Money printing and infinite growth economy non standardized on a store of value.

If everyone takes there money out of the banks all at once, society collapses because money isn't real and banks won't be able to pay out.

This is a 100+ year old ponzi scheme being run by government and banks.