Ooh, you people have vindicated my theory about utilitarianism and Death Note. It's actually quite startling that so many people 'support' Light in Death Note, but it's a definite example of utilitarianism - the theory that the greatest happiness for the greatest number of people should always be pursued. Light's aim of creating a completely 'good' world justifies his terrible, terrible acts (that is, under act utilitarianism), and people actually sympathise with this - I should know, as I do myself in a way. And on the obverse, we begin to despise the actions of L, the Kira Investigation Team and the SPK, despite the fact that they actively pursue the ideal of justice, rather than the flawed, nihilistic notion of justice that Kira and his supporters hold. I believe the angle that Ohba and Obata wanted the reader to come from was pretty close to that of Matsuda. He shows much indecision over the course of Death Note, and one almost gets the impression that his actions in the finale could have gone either way. Ultimately, however, he does side with the ideal justice, and this is probably what Ohba and Obata wanted with their readers. What they wanted, however, was not what they got. =/