Hmm. I'd go for the cliche 'evil' or something, but if we didn't have that...well, it raises a whole bunch of philosophical conundrums, and if I'm honest, I think the world needs a little bit of evil in it, to see the good for what it is. And I wouldn't want to deprive the world of something I hate but others like, like say, 'techno dance music'...so...perhaps just the more despicable aspects of evil. Corruption, torture, etc. Because I said we needed some evil, not 'pure evil'.