Exactly. This whole "guilty pleasures" thing seems to be a way of saying people like something they feel they shouldn't for whatever reason. Hell, I've a couple of those (dragons, vampires anyone? Or Dark!Hermione in the hp fandom) - so? *shrugs*

I had a similar experience with the Twilight books. I read all three of them very quickly, too and while it would be easy to point the many obvious flaws they have on various levels, they do make a very compelling reading. They won't make it on my list of favourites either, but I still liked them and I just know that I will read the next one when it comes out.