Oh I don't know why Dramione makes sense. There are a number of reasons the most fascinating being that by shipping Dramione we conquer the real enemy of the HP book series which is prejudice. Now many will think that Voldy was the main enemy but Voldy was jst a pawn in the hands of prejudice. An oppressor falls in love with the oppressed, a death eater with the Princess of the Light, a pureblood with a mudblood, the list goes on and on... After meeting Hermione, Draco starts questioning the very basic things he had been taught since his childhood and deduces that there is no superior between a purblood or a mudblood on the basis of blood and thus overcomes his prejudice against blood status, while Hermione finds out that you cannot judge a person by their past.