I think that this is disgusting but it brings up the debate on whether our values are any better than theirs?
Not only do I think that my values are better than their values, but I think rules and formulas based on objective observations and facts of reality could be thought of that could actually prove that my values are better than their values, so long as we take some basic assumptions like "Human life is valuable," or "The primary goal of living organisms is to sustain life."