Changes question

So I know that many people of the Dresden Files world hate the idea of our antihero turning full villainous. I know the idea of having the most impressionable and powerful wizard of the world turn into one of the most powerful and most feared wizard within both the White and the grey council would turn our idea of this character upside down. I wonder Is it because he would be the perfect villain or is it because you have this need for him to the good guy?

I mean some of us need him to be the good guy he’s fought so hard to be because if he was to turn into a bad guy…give in to the power of the dark side…he would be so fucking good at it.