I think impossible people prefer cryptoccurrency there is no guarantee using cryptocurrency. while receipts fiat certainly safe and guaranteed by the government. I think this is not the danger of cryptocurrency
This claim is only good when government is solid and strong. There were times in history of mankind when governments failed.
We had global economic crisis less than 10 years ago, how many banks have fallen after 2008?
What about countries like Greece and Cyprus, bank users were robbed because their money was needed to help keep the nation survive.