Books you’re scared to reread?

One of the worst feelings in the world is re-reading your once favorite book and realizing it's just not that good. It beats being told you have terrible taste by others imo.

What books you can't bring yourself to reread?

For me it's "Winter in Madrid" by C. J. Sansom, which I recommend to everyone and their grandma despite only reading it once in college. The way I remember it, it had great characters (I always imagined the main, Harry Brett, as Peep Show's Mark – very reserved, plagued by self-doubt, caught up in personal drama he wants no part of, often unintentionally hilarious; my other favorite, Barbara Clare, provides one of the best examples of character development and "learning your worth" in fiction, and her ending was great! #yougogirl), solid plot, atmospheric writing, and a real emotional punch. One of the core questions could be summarized as "Is it morally justifiable to betray the trust of a bad person if they only trust you and you alone?", and I really liked that. (SPOILER: YES, YES it is, that jerk will drop you like a hot potato the second you become an inconvenience, human connection is meaningless to him, for the love of god stop agonizing over his non-existent feelings…) But not enough reviewers on goodreads seem to agree with me, and the ones that don't, raise some pretty good arguments for their dislike, which I can't refute unless I reread the book, and I can't do that now, bc what if they turn out to be right?

Another example would be any novel by Lidia Charskaya, who wrote turn-of-the-century YA about girls in boarding schools. I remember reading those as a wee lass, and the drama, the pizzazz, the stories of poor orphans ending up in the same class with proud Georgian princesses, it was too much for my little heart… And then I go on wikipedia and someone calls these books formulaic and trite. SIGH.

TLDR: Do you have any books like that? Books you never reread lest you shatter the warm, fuzzy memories associated with them?