>As a matter of economics, the value of something doesn't (or shouldn't) depend on how easy it is to get financing for that thing.

When interest on mortgages shrinks the house prices will become inflated. In fact it's smarter to buy a house durng a time of high interest at 400k and later refinance with a lower interest rate than to buy the same house for 800k at a low interest rate without posibility of even cheaper refinancing.