It is generational narcissism.
True that.
I think in the next few years, maybe sooner, we will see dirty nukes exploded on American soil. It won't happen until the final jigsaw of the puzzle is in place for Al Qaeda to feel it has the moral justification for doing that. This moral justification will be when the US finally bombs Iran's nuclear facilities & otherwise tries to overthrow the Mullahs in Tehran. Israel will not stand for a nuclear-armed Iran because that is an existential threat to Israel's very existence. The US totally supports Israel in this. But Iran is still some way from being nuclear armed (won't be until 2010 at earliest), but when it is close or has reached that point, the US/Israel will attack, without a doubt! When this happens, Al Qaeda will finally attack the US homeland again, like no one has ever seen before. All experts are predicting it and it is only a matter of time. When it happens, it will make 9/11 look like childs play.
That is all I can see on the horizon as far as a potential doomsday goes.