Every disaster contains a lesson or a message that needs to be examined. Every tragedy, no matter how terrible, should be absorbed into the public consciousness and adopted as a cautionary tale; a part of our mythos. These events should not be cast into the memory hole to make life less stressful, they need to be taken seriously. Otherwise, the damage done and the lives lost are all for nothing.
The national debt should be a huge concern for every single American, as the government is essentially stealing from people not yet born to pay for things now. As debt increases, so does volatility and interest rates; and at some point, the government will have to admit they cannot pay that money back.