I've noticed that most people who hate like the PT seem to be older fans. Now besides some legitimate grievances against the PT (there are some instances of HORRIFIC acting; I don't even think the writing is that bad, it's the acting), I think there are some other reasons as well. I think when Lucas decided to make Darth Vader Luke's father, the entire nature of the series changed. Fans who were alive to see the original release of Star Wars and Empire saw what one could describe in a simple little expression as, "The adventures of Luke, Han, and Leia." Luke was clearly the focus of the series, the hero and main character. Darth Vader was the personification of Evil, barely even a man. He was ruthless and cruel - the ultimate baddie, the ultimate antagonist. Luke and the Rebels fought against Vader and the Empire, and it was a straightforward good vs evil conflict. Then, when Return of the Jedi came out, all of this changed. (I think it's no surprise that many people who hate the PT think ROTJ sucked too). In ROTJ, the story became much more personal. It was about a son trying to reconnect with his father. Vader became more human, feeling regret and remorse. The bada$$ of Empire was gone. He was a contemplative and sad man. More than that, we see that he is not really all that powerful - he was nothing but a slave and pawn to the Emperor. I think a lot of people didn't like seeing their favorite villain turned into such a pathetic figure. And then, when Lucas decided to make the PT, it was a necessary result that Luke lost his status as the main character of the series. Anakin now is clearly the focus of the saga. His rise, fall, and redemption. Luke plays a pivotal part, but it is no longer uniquely his story, and this has aggravated a lot of fans. Also, the PT has continued the "humanization," if you will, of Darth Vader, showing him as a real person, who was once good but turned to evil. Older fans were outraged by the fact that Anakin was nine years old in TPM because it was so far removed from the ESB Vader. Vader's status as an iconic villain is somewhat lost, because not only was he once a good guy, he was THE good guy. It is my personal opinion that this is great, it makes for a more compelling character, but it has angered most fans. I think these fans are right that the PT doesn't seem to have a "classic" Star Wars feel to it. The addition of the PT changes the OT in so many ways. I think some fans wanted the PT to be a kind of "directors cut" of scenes tacked on to the OT. Imagine the OT as a novel; these fans wanted the PT to be nothing more than an appendix to the OT, providing some interesting background info but being nothing more than a supplement to the OT. Lucas has not followed that path. He fully intends the PT to be on an equal footing with the OT; he wants one, cohesive, 6-part saga, and he does not care if the original meaning or feeling of the OT is changed. Personally, I'm on Lucas' side. So I guess, to sum up what I'm saying is this: "The adventures of Luke, Han, and Leia" have become "The Rise, Fall, and Redemption of Anakin Skywalker," and many fans can't stomach this.