What is a genre of fiction that you have never given a chance, and why didn't you give it a chance?

I answered this question and it got me to thinking about how people view certain kinds of books. I know that many people eschew certain kinds of books because they believe that all books in that genre are not worth their time because it is a genre that isn’t taken seriously in certain circles.

As someone who read almost exclusively fantasy and a sprinkling of science fiction, I come up against this idea a lot. I may suggest a book to someone and they do not read it because fantasy isn’t taken seriously as a genre as others.

So, Jellies, what is a genre that you avoid reading and why do you avoid it?