Sometimes, I hate reading as a writer. I hate when I'm drifting along, getting pulled into a story while admiring its craftsmanship, and then, step by insidious step, I begin to develop serious issues with the plotting and characterization decisions made by the author.
I'm sure I'm not the only person to whom this happens. I'm sure plenty of writers-as-readers (and editors-as-readers and just plain readers) start out loving books and end up . . . not hating them, but reconstructing them out of sheer frustration.
Here's kind of how it goes for me, how I address the author:
Wait. Hold on. I don't like what seems to be happening here. If the hero or heroine does this-and-such, it is really going to ruin this story's appeal for me.
[I press on, my dread mounting.]
Damn it, this progression of events is pissing me off. You set me up not only to expect but to look forward to a certain development . . . and now you're pulling something that's going to destroy the whole setup! I don't mind plot twists, but twists that preclude an outcome I've been eagerly anticipating? Trust me, those aren't pleasing. At all.
[My dread skids toward disgust as all the wrong things -- at least, "wrong" in my estimation -- begin to happen.]
[Book sails toward nightstand.]
What possessed you to do that? In addition to not explaining all this other stuff? Are you crazy? You just ruined what could've been a fabulous read, what could've been a fabulous ending!
[By now, the engine of my brain has gone into overdrive, because I'm replotting whole sections of the book and reworking characters to make them more relevant, three-dimensional, and/or sympathetic.]
Okay, here's what you should've done to make this story more satisfying. Believe me, the direction you chose resulted in a big, sour WTF rather than an "ahhhh" of contentment.
[And away I go!]
I'm well aware I have no right whatsoever to approach books in this manner. What's more, I have my own stories to write. It drives me nuts when I start obsessing over somebody else's fiction because my imagination can't/won't go with the flow. I wish I could flip a switch and instantly turn off all my creative and editorial impulses. Aaaaarrrrgh!