Ironically, Baron Max, some of man's greatest achievments are also the greatest failures. Dynamite for instance, meant to be a safer alternative to nitro-glycerin for blasting and such, but proved to be a damned good tool of war and terror. Cars were once praised as a cure for pollution when pollution was defined by the quantity of horse-shit in city streets, but our new pollution concerns deplore the automobile and anything that puts carbon in the atmosphere.
On the flip-side, military creations made for killing evolve into making life better for us in some ways, such as GPS, better medical technologies, better transportation technologies, and overall, serves as a constant reminder that we should favor diplomacy over conflict. Notice that nukes were made but only TWO in the history of the world have ever been used offensively? Who knows, maybe a nuke or two will prove invaluble to, say, deflect an asteroid or something. Wouldn't it be sweet to watch this tool of death in use for good!
Shouldn't judge so harshly about how bad man is and how we might as well not exist, etc., sometimes we just need to give shit a shot and see what happens. Hell, it's worked so far for the most part, right?