The truth is, even if it is a book that is more than just okay, I still don't always read the sequel. I've found lately that I'm really not a sequel girl. In fact, I'm becoming a little annoyed with books with sequels because I feel like so many books should not have sequels...that the sequels just drag out a story that should be wrapped up in one book, not three. I've read sequels that are honestly a little painful because the story just seems too forced...like the author is dragging it out just to make it to the last book.
There are exceptions of course. Sometimes sequels work very well. And I think some multiple-book series work well, especially with children's books such as The Boxcar Children, where each book is a separate adventure almost independent of the other books in the series. I'm also a fan of companion novels where you can enter the world of the novel again, but each book completes its own story. A good example of this is Shannon Hale's Books of Bayern.
And as a writer, I like to wrap up my story in one book. I don't like to have loose ends. And when I finish the story...well, I think I'm done with it.
What are your feelings about sequels?