The security.
Wallet file itself is being in the file system without any protection.
And the service runners lack the sense of security as well.
When a theft happens, no one could help.
When a data lost happens, no one could help.
The rise of the price only attracts more hackers and thieves.
Bitcoin is about freedom, but it seems that freedom is scary - especially when freedom is not protected by guns.
I'm not calling for protection, but it looks like that bitcoin users are lamps, and are tortured, chased, eaten by wolves.