Seems like every day some new degenerate with delusions of adequacy needs something really obvious and fundamental explained to them, and quite often it is the same thing repeated ad nauseum. So here we go again:
I am not psychic. I do not have precognition. I cannot know that I will dislike something if I haven't even experienced it yet. Experience is a non-negotiable prerequisite to having informed opinions. Learning that I disliked it came AFTER reading at least this much of it, and that order of events cannot be reversed. If I hadn't read any of it then I wouldn't have any opinion of it, and therefore wouldn't have any reason not to try it.
Is there any part of that which is even remotely unclear to you now? Or do you need an even more in-depth and ultra patronising explanation about how cause and effect work?