Hufflepuff should be disbanded

My opponent responded to my idea that Hufflepuffs could do so much better if fully appreciated by talking about dreams and such, but he has still failed to understand my point. I was not talking about dreams, I was talking more of a training and peer example that is encouraged according to which house you're in. The Ravenclaws are encouraged to look into their studies and gain intelligence, the Gryffindors are encouraged to have bravery and courage and chivalry, the Slytherins are encouraged, to say the least, to do whatever they can to achieve their goal. Hufflepuffs such as Newt Scamander could've become much more famous successful authors. Cedric Diggory might not have died were he in any other house. In Ravenclaw, he would've known the right spell to protect himself, in Slytherin he might have used a Death Eater as a human shield or something, in Gryffindor he would've at the very least died with honor and killed some Death Eaters first. In Hufflepuff, according to my opponent, he was encouraged to be loyal, righteous and hard-working. None of these helped him! My point that it is possible for the Hufflepuffs to fit in with other houses well was completely neglected. He said I have "yet to give us a good reason as to how disbanding Hufflepuff would contribute to the greater good of the students." Well, in fact, I have yet to find a good reason as to why they would not. In my first argument (Round 2) I provided 3 solid examples. In this argument I have expanded on two of these examples to the point where it is a tragedy that these students were Sorted into Hufflepuff. My opponent went on to talk about how it would "betray students who primarily exhibit Hufflepuff traits," to disband Hufflepuff. I have already proven this wrong, and that Sorting students into Hufflepuff betrays them, not the other way around. My opponent has given, upon my request, some examples of Hufflepuffs being friends with Gryffindor. I would first like to thank him for that. Unfortunately, they're still confusing to me: He mentioned many times of tension between the two groups, but then said despite that, they were still strong allies. Really, any time that Harry could be incriminated, he was by the Hufflepuffs, especially Ernie Macmillan. I don't see how they could've interacted in classes, since almost every Gryffindor class is paired with Slytherin, not Hufflepuff. Zacharias Smith and Harry were more or less enemies, and tons of Hufflepuffs quit the DA. Perhaps had they not been in Hufflepuff, they wouldn't have been so encouraged to do what they, in that moment, thought was "right" and would've instead learned to look further into the situation and see what really was right. He, all throughout this debate, has been talking about the Second Wizarding War. While this is an interesting spectacle, let's look into the Second Wizarding War a little bit more. Who ended it? A Gryffindor. Who killed Nagini? A Gryffindor. Most of the actual advances in the Second Wizarding War were made by Gryffindors. Though Hufflepuffs fought for "good itself," they hadn't had their skills in dueling and their courage taught enough. Because of this combination, they hung back, afraid of fighting because they weren't encouraged to look into their studies as much. This is why no one ever heard of any specific Hufflepuff deaths. The war was really between Gryffindor and Slytherin. Now, I will review my points very quickly: 1-Hufflepuff has no motive: My opponent has yet to prove that their motive is significant and actually helps them. 2-Being disbanded would work out better for the students: My opponent and I have been having something of a back-and-forth about this, but I have proven myself right throughout my case. Cedric might not have died, Scamander might've done a lot better and the Second Wizarding War might've ended a LOT more quickly. These are just a few final examples.