I started to think about it. How a bank and folks could issue loans to people?
Currently, when you need to borrow money, your banker just edits your balance account and create money magically. You then pay back monthly.
Banks won't be able to do that with Bitcoin with its limited supply. You can't print bitcoins.
But now, between folks. Let's say I'm the banker and you're the customer looking to borrow money to buy a house. I can lend you the money but how to be sure you will pay me back with full interests? With banks, the solution is easy, the bank seizes the house and you can't do something. But the average Joe hasn't the same 'power' than a bank to collect a debt.
Yes, he edits number on your balance but that's not something magical because behind those numbers there is real money, they can't lend more than they can. For example there is some percent of money taken from every deposit and saved in reserves for every bank, ie you deposit 100$, bank can only lend 70$ from it, 30$ must be in reserves.
Yes, average "joe" has same power too, just agreement is different, you have to go in notary beauro, sign contract and etc, there are a lot of details in different countries which can't be written here well.