Actually 9-11 has little to do with it.
It was stagnating and drooping before that.
9-11 put a dent in travel and tourism, which has rebounded.
But, in the big picture, it is just the usual cyclic changes.
If things are so bad, why has the value of my home gone
up 50% this year?

'Cause you live in the DC area?

Real estate in the burbs there bears no relation to the rest
of the country.

Nexus 6