Why are you insisting, that we like Astarion? So, no, if that character is Astarion, then I have zero interest in his importance in the story. And now please don't ask again. I hope, that was clear?
First of all do not accuse me of something that I am not doing. I'm not insisting on anything. If you just don't want to have a discussion, that's fine. If you don't like Astarion that is your prerogative but don't be so dismissive when someone is asking to know more. That's the point of a discussion.
I already gave my reasons and yes, I could go on in length and detail about this, since I'm especially allergic of the vampire cliche that came up with the romantasies, starting with Twilight (one might even bring Anne Rice in, but imo, she did a better job in making the vampires interesting and real characters, despite loosing the plot after a few books). But I don't think, that that would be beneficial. I only end up making Astarion fans mad and everyone is entitled to their favorite character. I'm perfectly aware, that Shadowheart is a bit of a cliche too - I call it the bitchywitch trope (I'm pretty sure, there is a more official term for that) - the worst of them is Morrigan from Dragon Age. The bitchy female companion, who knows everything better and doesn't take any advise basically. I just happen to like Shadowheart depsite this. And I think, someone above mentioned, that they like Astarion for the same reason, I hate him, so tastes are different.
There is nothing wrong with that. It's perfectly fine. Like you said we all have different tastes.