Why LV must kill Harry?

[psychodudeneo]

No: HPFGUIDX 45190

> 
> This has probably been answered before.  If, indeed, Harry is the 
Heir of
> Gryffindor, which I think is likely, why did the Sorting Hat try to 
put him in
> Slytherin?  The Sorting Hat was Godric Gryffindor's own hat; surely 
the hat
> would recognize a decendant (ancestor?) of its original owner.  Or 
possibly
> "heir" is not necessarily being used in the blood sense - Harry 
could be
> Gryffindor's heir *by designation*, either by Godric himself in 
conjunction
> with a prediction, or through the generations by the previously 
designated heir
> (Dumbledore?).  But again, why would the Sorting Hat not recognize 
this?  Any
> thoughts?  Old posts I should be reading?
> 

Harry and Voldemort's traits were mixed up during the failed AK 
incident.  Thus, Harry has some of Voldemort's personality traits and 
abilities (talking to snakes).  Since Harry has part of the Heir of 
Slytherin's "essence" in him, it's only natural the hat would 
consider putting him in there.