I will probably regret saying this, but I really think the AF books cater more to the male audience. I only say that because of the overwhelming number of women I know that simply couldn't get into the books. Granted there are some that definitely do, but most that I know can't make it past the first book. To Colfer's credit, as the story progresses you start to see the real depth in Artemis, and those undertones you were referring to begin to slacken as Artemis's humanity and morality start to become more predominant. But admittedly, he's definitely the archetypal anti-hero (which is another reason the boys love it; girls just wanna have fun, boys just wanna be bad [which makes me question the truth behind the Adam and Eve story])