Personally, I have stopped liking books and movies that I used to like. Twilight, Fountainhead are a few examples. I think that as we grow, our taste evolves and we might stop liking the things that we used to like. It’s perfectly natural because we are all constantly learning.
That said, I said that about PS for the sake of argument. I am not planning on not liking it. But if I do, I hope it happens only if my taste in books changes rather than because of someone else’s opinion.