The adage, "things will have to get worse before they get better" is a fallacious, self defeating and potentially fatal one. It awaits possible refutation by one or more of four global calamities that threaten our species; ecocide, genocide, manufactured plague, and nuclear Armageddon.
1. Ecocide. Mother Nature may have the last laugh, or blowback, if we don't start placating her instead of plucking her. The planet, offering finite, not infinite resources for human use and having exceeded its carrying capacity for nearly seven billion humans and counting almost exponentially, could very well become unlivable eventually with air that is un-breathable, with soaring temperatures that are unbearable, with water that is undrinkable, with food that is toxic, and with no oil to lubricate and combust. Before those extreme conditions would happen there very likely would be an outbreak of "resource wars."  And we can "depend" on our military being in the thick of it.
2. Genetic Engineering. The military has discovered that it could make its arsenal of biological weapons more effective by genetically altering them.  Since there are very few natural pathogens that lend themselves to biological warfare, the genetic engineering of unnatural pathogens is where the military is apparently staking its future in remaining a superpower and threat to uncooperative nations. The military's secretive research arm, DARPA (Defense Advanced Research Project Agency), has launched an expensive program called "Living Foundaries," a misleadingly innocent name if there ever were one. "Think of it," says journalist and editor Katie Drummond, "like an assembly line, but one that would churn out modified biological matter -- man-made organisms -- instead of cars or computer parts."  Just think, too, of what might happen if a psychopathic warrior-in-chief, unrestrained military and political advisors, and mad scientists all came together to plot and unleash an explosion of unnatural pathogens on their adversaries. Can't you just picture it sometime in the future; our one-eyed, two-headed, three-legged species walking down the street, if any streets are left?
3. Manufactured Plague. The recent scare of a spreading Ebola epidemic has heightened concerns about biological warfare and Ebola terrorism in particular. A journalist writing in Scientific American reports that "National security and infectious disease experts agree the obstacles to a large-scale assault with Ebola are formidable." She concludes that "---the possibility of rogue organizations sowing this terror on a similar scale seems largely out of reach."  But the journalist and the experts may be too sanguine. Several readers using their imagination in commenting on the article described some very plausible and easy ways for suicide carriers of Ebola to "carry" it to populated areas.
That journalist, moreover, apparently was not referring to any "rogue organizations" in America deliberately manufacturing a plague in various parts of the world. If the following news item is authentic there should never be any doubt about how fiendish an American regime can be. Dr. Cyril Broderick, a Liberian scientist and a former professor of Plant Pathology at the University of Liberia's College of Agriculture and Forestry, claims that the US Department of Defense had been funding Ebola trials on humans in Guinea and Sierra Leone just weeks before the Ebola outbreaks there. 
4. Nuclear Armageddon. It may someday be a reality, not just a scriptural prophecy. Humanity has had the capacity for total self-destruction ever since Real America introduced nuclear bombs to the world. Armageddon could happen by accident rather than by intent, and there have indeed been several "near misses."  Or it could easily happen if there were escalating blowbacks or confrontations among one or more warriors-in-chief and one of them had the mentality of the late General Curtis Lemay, who seriously proposed dropping "the entire stockpile of atomic bombs in a single massive attack" on the Soviet Union during the cold war. 
Nine countries thereabout currently possess nuclear weapons.  Not all of them have signed a treaty agreeing to discontinue expanding their nuclear weapon capability. The U.S. has the most adversarial relations with three of those nations, China, North Korean, and Russia. Sometimes the disputes become overheated and high-level warnings by one or both parties are issued. Whether these verbal exchanges would ever culminate in an exchange of nuclear bombs hurling back and forth remains to be seen. Some pundits argue that U.S. militarism is heading it toward WWIII, and an international group of world renowned scientists has moved their "doomsday clock" from five minutes to three minutes until midnight doom. 
(Note: You can view every article as one long page if you sign up as an Advocate Member, or higher).