I think Rupert is staying for the fans-- I wrote to him and said he's so talented and he's my favorite actor and I wish he can stay on and do all the 7 HP films. And in his reply he said thank you and that its hard to say if he can stay for all 7 but he will try to as much as he can.

And I was just "awww, he's so sweet" -- and I was wondering how many fan letters he gets that say the same thing.

So I'm really thinking that part of the reason he does want to stay is bcoz he knows that's what his fans want him to do. maybe not entirely, but I'm sure it does have some bearing on his decision.