Oh, and is it wrong that I hate fics where they ignore anything canon at all?
No, that's not wrong at all! If the fic is AU, then I don't have a big problem with complete changes if they make sense but when there's no reason for the mix-up other than laziness on the part of the author, it's one of the most annoying things ever. There's a difference between asking "what if" and having your story diverge naturally from canon and ignoring canon without any rhyme or reason.
I have to admit to liking some AUs that have nothing to do with canon. Like the "Saving Connor" stories are quite good even though they have almost nothing to do with Harry Potter canon. It does seem a shame that such a good writer would spend almost a million words writing fan fiction when they could have finished their own original novel, which is good enough to be published.
And you ask the author why there's no Voldemort and Harry's still fifteen, and they just go "I didn't like those books."
I don't get that! I feel weird saying this but I LOVE canon. I love that Harry is such a great guy, that he doesn't want to blast people out of the sky, that he forgives people and loves his friends. I love that he's human and makes mistakes. There are a lot of people that don't like those things about Harry Potter and it blows my mind that they write fan fiction for the area. The entire "Dark Lord Potter" genre confuses me because its very basis is anathema to canon. It's always been obvious in HP that Harry is important because of his heart and courage and not because of his skills. The entire point of the novels is that this kid with average brains is the hero over incredibly gifted accomplished wizards and that there's more to a person than how many spells they know, or how smart they are, or how popular and cool. Harry isn't less than his father, Albus Dumbledore or Tom Riddle because Harry isn't as intelligent, prodigious or handsome. Not that I haven't read and enjoyed some of these stories but the contempt in which these authors hold canon makes me sad. Why they're writing in this fandom is beyond my comprehension.
This dove-tails neatly into my main pet peeve, which is when someone writes an AU but strictly adheres to canon even when it doesn't make sense in their story. There's a pretty good "Sirius adopts Harry when his parents ignore him for his twin, who everyone thinks is the boy who lived story" on ff.net. But, as we enter the second year of this story, the author has lost me because she follows canon even when it makes her characters OOC. You can't set up your characters to be different than canon, and have them do the sometimes stupid things in the same manner as Harry and Co. in canon.
A lot of writers don't get that there has to be some sort of
logic behind events in every story. For example, if Ginny's suddenly Seeker before Harry, she's
not going to get a Nimbus 1000 from McG. Not only will Molly probably not let her play Quiddich as a first year because it's a very dangerous game, but all new players don't get a new broom from McG or Dumbledore. You only get a new, top of the line broom if your parents were favorites of McG or AD, you were left in an abusive home, the teacher felt guilty about leaving you in said abusive home, you have no parent or guardian to buy you a broom, the teacher thinks you are going to die an early death and feels sorry for you, and the person buying the broom really, really likes you. If the character doesn't meet these criteria, they're not getting a new, top-of-the-line broom free from McG/Dumbledore.
Whew, that rant felt good