I'm fairly sure that I would have identified very strongly with Light if I saw it at eleven. On the other hand, at eight I would have identified with L, and now I identify with N, who reminds me of my eight year old self.

Anyhow, the moral of Death Note is "If we catch Kira, he is evil. If he rules the world, he is justice." So, it's useful as an example of confusing P(A|X) with P(X|A): rationalists should win, and "therefore" winners are rational.

ETA: That "being rational" equals "being justice" is Light's (and L's) conception, not mine. The creator of DN believes that almost every character in it is immoral.