Lord Darkstar
Grandmaster of the AFC
yeah Harry isn't that bright, but my main problem with him is his lack of power. Think about it, he is supposed to defeat Voldemort and the last horcrux is in Voldie's body, so that means he has to destroy Voldie's body. Now even if all he has to do is touch Voldie (LV from now on) he still has a major problem, the deatheaters. He will have to fight his way through them, he couldn't take Snape or Bellatrix by himself, how does he hope to take Snape, Bella, Lucius etc. He simply does not know enough magic to do anything, which brings up another interesting problem, when Dumbledore destroyed a horcrux, it still destroyed his hand, so Harry has to be able to destroy a horcrux, yet still come out alive, something that he clearly cannot do in his present state, he does not know enough destructive spells or shields. I will be quite interested in how JK lets him beat LV, because right now, he doesn't stand a chance.
Oh, also we know that he cannot simply touch LV and LV will die, he tried it in the Sorcerer's Stone and it didn't work, same in Goblet of Fire so it won't be Lily's protection that does it.
Oh, one more point, Ush is right, Harry did still think the HBP was his dad, in blatent denial of his dad being pureblood, he only listened when he talked to Remus