It is foolish to hold on to old high depletion standards of the 20th Century.  We are healthy when we adapt our needs to that which can be sustainably provided.  The energy performance of our buildings constitute approximately half the energy consumed in our economy.  Construction and maintenance of our buildings offer our biggest opportunity to reduce the depletion of non renewable resourses and reduce emissions and environmental legacies associated with most fossil fuels, (permanent loss of water through fracking, tar sands, off shore drilling).  Our responsibility as adults is to develop the infrastructure to be appropriate for the limitations that can be sustained in a healthy way.