What are the five worst novels you have ever read?

And why were they so bad? Were the plot and characters weak? Did you hate the writing style? Was it too confusing, or maybe too offensive? Only books you’ve made it at least ¾ of the way through count. I think can of many terrible books that I put down at page fifty, but I’m looking for the books that were good enough to read most of the way through, and yet bad enough to complain to your friends about. Maybe even for a few weeks.