What a bunch of negativity around here! Times have their ups and their downs, I take this dark look at our future as a sign of our current pessimism, but the march of logic and sanity is unmistakable from the history of humanity. It has its claws sunk deep, and it will not let go.
At some point or another there may be a new sickness, but the ability to contain and confront I think has already reached a state of great accomplishment. When confronted with a true problem, I believe that necessity will fuel the technology that is there waiting to happen in biotechnology to new heights. The plague of the future, while being a tragedy, will also cause a critical mass event in biotech, and the exponential rise of knowledge will outweigh the biological ability to overcome it.
The world is increasingly becoming united via economic power, intertwined to a point where war in just about any form between major powers is an impossibility. In fact this is an extension of the nuclear world parity that exists. The option of war simply does not exist, and as the United States is finding out, even the option of police action itself is more trouble than it is worth.
China is not the threat people like to pretend it is. Its poor mass will eventually cause it too much problems. Compile that with a variety of other issues, and China will soon realize that it makes far more sense to spend its money on its people to keep them complacent than wasting billions on sending someone around the planet in space. The same goes for India.
I think Islamic terrorism is a fad that will eventually peter away. Plenty more blood will be shed before they realize that there is no point to it and it will accomplish nothing, over time the liberalism of the west and compelling attraction of logic will cause a change in worldview.