I disagree. Not to get too pedantic here, but since we're discussing the meaning of words, the dictionary definition of humane is relevant: "characterized by tenderness, compassion, and sympathy for people and animals, especially for the suffering or distressed." There is no reason that the "unnecessary destruction of lives for the sake of profit" could not be done in a way that is accurately described by that definition. In fact, I believe the video I linked is a perfect example of someone behaving in that way.