I read Wuthering Heights when I was in my late 20's, and had pretty much the same reaction you are having. I really loathed the book and found pretty much no redeeming features. But then I'd been reading Andre Norton's Darkover books for fifteen years by then, and though Mz Norton cannot proofread, and is abomnably sloppy with plot lines, at least she has great female protagonists!
One of the things I reacted to so strongly was having to read about people (in Wuthering Heights) who were so co-dependant and abusive. Goodness knows I saw enough of the negative aspects in life in my own family and in my best friend's family. Ick!!!