A mortgage beyond 15yrs , and/or with total interest repayments equal or more than the principal amount, is equivalent to "renting from a bank."
A 30yrs already guarantees to work the whole life to repay it.
"The 100-year Japanese residential mortgage: An examination
A recent innovation in the Japanese real estate industry to promote home"
old wine new bottle. #mortgage str
In Germany, the population is currently decreasing. They will need to try hard to keep the housing ponzi going.
austria is 100yr gov bonds (not direct related to housing)
issued
If population declining, means more houses available and pricea should go down... 
no - 5% people lot of extra cash who will buy but not for living - parking fund outside the bank - not liquid is fine.
"slave until death" trap 
land of the slaves
