Cat:

Certainly, I can.  Keeping the unsophisticated audience in mind, I'll present just 2 thoughts that quickly come to mind:

1. If you don't have the money in hand to buy something, I think it should cost you something to borrow the funds necessary to make that purchase. I recall decade after decade where a car or house had an added borrowing cost when you were shy the unfunded last 75% of the purchase price. 

2. Savers and retirees very likely would prefer to hold/invest in fixed income instruments that paid a decent interest rate for using other people's money. I'm not suggesting rates last seen in 1980 -- more like 1975 or 1985. No; they will not like to think that they TRADE bonds -- just BUY bonds and hold them for the interest paid. Whatever happened to that idea?

Instead, what I see is HUGE government debt that is only possible because of ridiculously low rates. Further, what I see is a housing market where prices rise exponentially because money is cheap.