Every loan require some level of assurance that it will be repaid or recovered, that can be in the form of collateral which can be in the form of Bitcoin, other cryptocurrency or something of value that can equate the amount being borrowed. I don't think Bitcoin can be addressed as the future of loans because most people are yet to accept it as collateral due to legalisation challenges and the few countries where Bitcoin can be used as collateral, people prefer physical assets such as real estate to Bitcoin. It will really take a long time and process for people to willingly accept Bitcoin as collateral for loans.