Which books have been so bad or incomphrehensible that you have given up reading it before the end? List as many as you wish.
My answers are:
The Time Traveller's Wife by Audrey Niffeneggar (intensely disliked every character)
Moby Dick by Herman Melville (a fair start, but bogged down in symbolism)
Blow Fly by Patricia Cornwell (virtually finished but disliked the new writing style)
Hornet's Nest by Patricia Cornwell (awful characters, amateurly written)
Between The Acts by Virginia Woolf (this final novel was a really poor one from this talented writer)
Now it's over to you...