Wow this conversation moved on pretty quickly, don't know what happened there, seems like only yesterday I posted that response.
Back to the subject of war and such, yes War does play that part, you could almost say we're our own worst enemy. But there's also bacteria, viruses, parasites, worms, and such. Hell everyday people die due to their own stupidity or because they're eating too much, or not enough. We really don't need to regulate population that much, and even if we tried, assuming the tool is murder, it might do more harm than good, imagine how much people Hitler killed, then imagine how much people would be alive right now if he wasn't alive. If someone had killed him we might be worse off today than if he hadn't been around, and that's ignoring stuff like the Technological advances the war brought us, like the computer. Now with that in mind what if somebody did try regulating the population, somebody like Hitler who had an impact on our population might have been killed and for all we know the world could be in worse condition than if he hadn't been and died. It isn't as if he wasn't a bad person of course, I'm just using him as an example, he changed things and to take matters into our own hands who knows what might happen? A better example might be, if we cured a disease tomorrow that would drive somebody to become an important force in their field would the curing of the disease have been worth it?
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"They do, but what do you think is on the radio? Meat sounds. You know how when you slap or flap meat, it makes a noise? They talk by flapping their meat at each other. They can even sing by squirting air through their meat." - Terry Bisson