Banks and payment providers (Visa Mastercard AMX) provide services beyond simply a store of wealth and a mechanism to transfer it.
Actually 2FA, hardware biometrics, behaviour based fraud prevention and personal confirmation of suspicious transactions. If you’re using credit they can refund fraudulent transactions, and there is the chargeback mechanism. This is probably banking system dependent, but in AUS there is a refund mechanism for mistaken/fraudulent traditional bank transactions.
BTC has effectively none of the safety net, and humans are fallible. We need the safety net. It’s the hugest barrier to adoption. Exchanges do a far better job of managing the risks than trusting your wealth to a hardware wallet.
In financial systems with a basis in law, no transaction is ever final. It doesn't matter what the protocol says or what the technology is capable of, if the judge says that the transaction must be reversed, you get it reversed, even if that means delivering cash in briefcases or something like that.
In systems with a basis in technology, final means final. If the North Koreans take your money, your money is taken.
This piece from Patrick mcKenzie explains this well https://www.complexsystemspodcast.com/episodes/the-900m-wire...
The safety net makes you less secure against the U.S. government, but more secure against everyone else. That's the right choice for almost all users, but I still think it's at least kind of good that people have a choice.