Why would they make this travesty? For it to be true to the books the good guys must always lose, the magic must make absolutely no sense, and there must be an inordinate amount of bizarre sexual relationships and attractions. Not too mention a complete lack of anything approaching a good homelife unless that character will shortly be shit upon by the forces of "realism".
Because it's realistic when no one's happy and the bad guys always win.
That is not dead which can eternal lie and withs strange aeons even death may die.