Anybody who believes that the only way to survive is to kill is perpetuating that reality.
And here you display naivete.
Humans are flawed. Our very nature includes violence.
Most of the advances the human race has made were made with the goal of violence, or the goal to defend oneself. Gunpowder was once an innocuous substance, used by the chinese for fireworks.
When the Europeans returned from China with some gunpowder, it's potential was realized, and things like swords and shields and body armour(at least as we know it) became obsolete.
The advent of the use of Gunpowder for purposes of warfare lead to the invention of new technologies to either defend oneself against the bullet(musket ball) or newer methods that could outpower gunpowder weapons.
The invention and use of plumbing(Rome or Grecians, don't recall) was a necessity to help maintain cleanliness and keep clean water available when a city was under siege.
And the human race continues to invent new things. Most of which would never have been dreamt of if it were not for the basic principle of combustion... which only became a big deal upon the discovery of the use of gunpowder in warfare.
Not to mention the basic premise of balance.
Without war, there can be no peace. Peace without war would be hardly peaceful, as the peace would be breached often by strife and bloodshed.
Altruism is nice, Lavaske... but we're human. Human's are rarely, if ever, truly altruistic. Even Mother Theresa... she gave of herself and her time, as she knew it was leading her to a 'better place' in the afterlife, or so she believed.
But back on topic...
I agree, Torture is not good. But if I had to, as a leader, choose between torturing an enemy who sought my death, and the deaths of my people... the choice is obvious.
Your own people SHOULD come first. In a world society delineated by independent nations, anyways. Sadly, Congress can't figure this out. We have homeless and destitute people the world over, sure. We should work out taking care of our own before worrying about another country's.
I don't seek to dictate the policy of other nations, and neither should anyone else. Of course, some exceptions should be made... such as nuclear non-proliferation. Last thing we need is for the wrong people to get ahold of nuclear weapons, and/or the ability and materials to make them. That, unfortunately, includes a number of 'rogue' nations who consistently make threats against other nations that do little or nothing to harm them, such as the Democratic People's Republic of Korea and the Islamic Republic of Iran.