Did you mean that you personally didn't like it? Or that it was objectively bad or unworthy of acclaim?

Yes, there are people who think that Catcher in the Rye was "a load of rubbish", but that doesn't make it so. Having a sympathetic protagonist isn't a requirement for good art; neither is not being boring to you personally at the time you first encountered it.

It's possible that now, with greater knowledge of the sweep of literary history, that you'd recognize what's good (or even great) about it.

I'm cautiously sympathetic to you. I used to think that Joan Miró was intensely overrated, but that was before I got some more schooling in 20th century painting. Now I'm happy to see his work when I visit modern art museums.