Hope for the Best, Prepare for the Worst

I hope for the best, but prepare for the worst. I hope that the U.S. economy improves, that the world improves, that humankind enjoy peace and prosperity. In the brooding hours of the late evening, I suspect otherwise, and am reminded of the old slogan, "what fools these mortals be." Look at Syria, North Korea, Iran, China, Russia, and even our beloved United States. There are many problems, and some problems are beyond our capacity, morally and intellectually, to deal with, such as global warming. We are neither intelligent nor ethical enough, collectively, to deal with global warming. What will happen, will happen. That, I feel, is a given. Also, nuclear weapons--I think that in my lifetime, the mushroom cloud will arise once more over a major metropolitan area. It strikes me as unrealistic, given our history, to suppose that feeble Man, given a mighty weapon, will refrain, out of mere reason, or ethics, from using it. We use the tools at our disposal, all the time, for a variety of reasons, with barely a thought to the consequences; such has been our history. Thus, Earth is going to be a pretty hostile place for living creatures at some point in the future, and I see that as a given, again based upon history. To know history is to gain the ability to predict the future. Earth's end as a happy, pleasant breeding ground for humans saddens me, because good planets like this are depressingly scarce. We can't just up and move to Mars, now can we?