Let's Talk: What makes you DNF a book?

I quickly get bored if the book began with long description of scenery. That's why I gave up on The Nine Tailors by Dorothy L. Sayers.

I dislike when the author forces me to accept their agenda. I am here to read a story, nor propaganda. In the case of nonfiction, please convince me with good evidence or argument.

I dislike when the author writes sad ending because supposedly it's more realistic or high brow. It was lucky that I skipped to the ending of The Necessary Hunger, or I would have wasted my time finishing it. It also had my hated trope: miscommunication problems that can be solved if people could just talk for 5 minutes.

I also dislike entitled protagonists who thinks the world should rotate around him, and the narrative agrees with this. I couldn't finish The Children of Men by P. D. James because how insufferable the male protagonist was. Sadly, I continued to read Private Patient by her, which was so horrible and offensive.

( Spoiler for Private Patient. Note for rape )

This is so awful that I never read anything of her anymore