So, usually when I'm hating a book I decide to DNF it - mostly to preserve my own sanity. But I also have struggled with a massive guilt complex about not finishing what I've started. So I tend to let myself get suckered in by books that start out not so bad, but tailspin into nightmare train-wrecks! I don't know about worst, but the most memorably bad book I read in 2013 was Towering by Alex Flinn. A seriously big mess of a book, but when there was a plot twist involving an LSD drug leaf being grown by enslaved people underground...yeah, just NO!!! My review here. Read at your own risk!!!!!