Are advanced economies too ‘financialized’?

is about the financial system. Saving; why or for what do households and individuals save? Does it matter? Can it be changed? What is the role of the financial sector? How does the financial sector coordinate supply and demand of loanable funds? How is it regulated? Should it? What is shadow banking? What problems does it pose? What does it solve? Are advanced economies too ‘financialized’?