Housing crisis

Watching something on tv the other day it was all about the housing crisis,foreclosures,short sales etc,people having difficulty paying there mortgage.Everybody talks about how the banks were overlending etc,but i say it wasn,t just the banks it was the wallstreeters as well as the real estate agents,it seems to me that everyone was trying to grab a alice of the pie without first paying the piper,the bottom drops out when you mess with the foundation,its thumbing your nose at the founding fathers of the country and telling them what they built is,nt worth fighting for or preserving,hey i guess they must have thumbed back.