Spoiler: Why did Ron and Hermione let Harry go?

[June Ewing]

> Niru: 
> One thing that really bothered me in the movie was that Ron and
Hermione just stood back and let Harry walk off to the forest alone.
This part was handled very well in the book IMO. There Harry does not
say goodbye to them knowing that if he does then he may not be able
to walk away. It seems very out-of-character for Ron and Hermione to
just stand back and let their friend walk to what is probably going
> to be his death.


June:
The thing is that in the movie they had figured out that Harry was a
horcrux and they knew that that meant he too had to be destroyed. It
was a very sad scene in my opinion.