Bitcoin does not make banks unnecessary.
Bitcoin cannot provide loans.
Bitcoin cannot provide investments.
Bitcoin cannot provide estate security.
Bitcoin has it's place as an option to the intelligent investor. But it will never replace a bank.
yeah, bitcoin will never replace bank, it is impossible, I just see bitcoin is good for international transfer, only international transfer is better than banks' transfer, much faster and anonymous. But the price is volatile, when btc is not volatile, btc may be used as a currency, or alternative, but never the alternatives of banks.
I think people get the two types of banks mixed up. There's the central banks that issue the money and then the regular banks that give ordinary people loans and hold their savings etc. It could in theory get rid of the central banks because we don't need them to issue our money any more and others could be prohibited from creating it out of thin air themselves though loans etc. If they haven't got the cash or coins to make a loan then they can't load any money because if it's not on the blockchain then they don't own it.