One of the most sobering stats I've heard is that something like 21-23% of all US Currency was printed in 2020 alone. So almost a quarter of all the money that's out there was "minted" in the last year (and I doubt it's slowed down much going into 2021). The chart below is for the US, but pretty much every relevant central bank has been doing something similar I'm sure.
Personally, it's seeing charts like that that makes me a bear not only on the USD, but in FIAT currency in general. You don't have to be a Wharton grad to understand what's going to happen to the value of your cash savings when so much money is being pumped into the system.
Now I don't necessarily think crypto is the only answer to counter this type of devaluation, but I do think it's part of the answer.