Someone was saying: "Why is credit so important? Because when a borrower receives credit (loan), he's able to increase spending. Spending drives the economy. This is because one person's spending is another person's income ".
I think he didn't look at the lender's prospective. When a lender gives his money to someone else, his spending will decrease. So the economy is balanced and this will not drive the economy. The same amount is spent just by a different person.
Am I right? What am I missing?