Cryptocurrency is the most efficient money we have. It doesn’t require any middle man bankers. Sure, hackers can hack and loot exchanges, but right now we have the government looting us with inflation.
The problems you mentioned are being worked on. There are ways to backup and restore your wallet that will become easy.
The global economy doesn’t need to only rely on Bitcoin, so the argument that we have to worry about deflation is just wrong.
Cryptocurrency is the most efficient money we have
You are either misinformed or brainwashed.
https://www.nytimes.com/interactive/2021/09/03/climate/bitcoin-carbon-footprint-electricity.html