If the dinosaurs were still around, you could ask them if they thought it might be a good investment. But they aren't because they couldn't do it, and one of those asteroids got them.
Considering something is trotted out every decade to scare us into submission to more government, I'll stick with my boondoggle angle, thanks.
(Global cooling, then global warming, water shortages, oil shortages, overpopulation, now underpopulation of western society..ad nauseum)