Maybe Dick's like Cassandra, who was able to predict the future, but cursed in that no one would believe her. Why knock yourself out with histrionics if no one's going to buy it?
Another possibility is that Dick's not especially worked up over our oncoming doom because he knows it's a bunch of crap. That'd put him in the same boat as most of us, who also aren't extremely concerned about Cheney's doomsaying either. Other than the wingnut right who'll believe anything, we're all pretty sure that Dick's a BS dispenser and we don't lose a lot of sleep over his warnings.
There's a third possibility; that Dick believes what he says because he's a dangerous lunatic prone to paranoia. Cheney's not especially animated at the thought of another 9/11 because he's used to living in a world where disaster is always right around the corner. His lack of excitement doesn't indicate a lack of earnestness, it's just the consequence of living in constant fear... [CLICK TO READ FULL POST]