if i build a bank of bitcoin that operating like a traditional fiat money bank when people can save the money and get interest for their saving and also people can get a loan from my bank but the fiat money is change for bitcoin, the question is would you guys trust me to save your bitcoin on my bitcoin bank that i want to build ?
The purpose of Bitcoins is to get away from banks, and not have them store your money. Also banks are allowed to lend out 7 times the amount of money that they have from the public. You cannot do that with Bitcoin. And where are you going to store the Bitcoins? In a Bitcoin wallet? People can already do that for themselves, unanimously, private from most people. While you'll be a major target.