Moshe, fatalistic philosophies are never taken to their logical conclusion by those espousing it. What else can you not prevent? Freeway accidents? Well drive along at 120mph. Pole Reversal is not a legitimate concern. Only Peak Oil followed by Global Warming pose a credible threat to civilization in the coming decades.
When hunger pangs hit unprepared people because of ruined crops try soothing them with "why worry about it." When those people start showing up at your doorstep repeat it like a mantra "why worry about it." I have very little hope that humanity will ever solve anything but a few individuals who have the foresight to "worry about it" will be able to effectively deal with the situation. They will survive and establish a new civilization upon the ruins of this one.
As for not being able to maintain a constant climate that is false by mere virtue of the fact that the climate is being changed by humans. If we can change the climate without even trying we can also stabilize it not merely preventing the consequences of man made Global Warming but also any change in climate due to nature's gyrations.
villabolo