You answered yourself as to why society is "obsessed." Its because fractional reserve banking lowers the cost of borrowing, thereby creating a greater incentive for people to produce, and thereby serving more people and increasing the consumer surplus.
The needs of the society depends on the hand ofbpeople thus have different needs too. The economics status will surely on the top if the status of individual will increasing. If we are going to talk about the banking system it will be greater in borrowing that turns to investment by other people. That is totally true also that it will increase of consumer suply because of high demand.