Actually not, it depends on how the writer handle it. It can work out great. But they just decided not to go deep into the personality and behaviour of Astarion, in the meaning, it is not questioned much. I don't know, if it is done because he is a Vampire, as far as I know Stephen Rooney has made other stories without Vampires before BG3, which have a similiar style. About Welch, who wrote some of the romance scenes, I don't know. And why should Vampire stories tend to be for teenage girls or children? I think it depends on the Vampire / story of Vampires, not of "vampires" in general. There are stories for teenagers and there are stories for adults.
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I am not talking about other stories I am talking about this one. Stay on topic.
I don't care if the Vampire stories should or should not be for teenager. The fact IS most of the most popular ones are.
From Vampire Dairies, Twilight, Buffy the Vampire. I am sure their are adult vampire romance stories but in America Vampire romances are dominated my media for teenagers. I know their are a lot of adult fan's but the target audience is almost always teenagers/ young adult.
