Exactly whom do you think sacrifices for those low rates? i.e. savers, retirees, etc...It also creates greater dislocations as investment funds are forced to chase yield. Another overlooked "casualty" to central planning is the simple fact that all of these "shortfalls" from the implied 8% returns for pension plans is that they have to make up for this with a combination of social service cuts and "miscellaneous" increases in taxes, fees, etc, etc..
So yes, there is a huge price to pay for artificially subsidizing record low mortgage rates.