All I have in reply to my darkside is "Because it's wrong." An irrational maxim based on my conscience and understanding of the consequences of this.
"because it's wrong" isn't really an issue when shit is this fucked. Right and wrong are a pleasant fiction only if you can afford them. If I gotta turn cannibal, I'll eat the dumb people first. Not because they deserve it but because the rich are too well armed.