Perception
Another thing is, as listeners, we will learn a certain way of hearing something played, particularly the first time we hear it, that makes everything afterward seem different and frequently not as good in our minds. A perfect example of that occured with me with my first experience with Pink Floyd. It was their work on The Delicate Sound of Thunder, a live recording. I recommended it to a few people who'd already heard their studio work and they later told me that they thought it was awful. I'd already learned to enjoy it and appreciate it since it was the first thing I'd listen to by them. Later when I heard their studio recordings, I felt that the studio work didn't have all the raw emotion in it that the stage perfomances did, but I could understand from a fidelity standpoint why those I had suggested it to felt the way they did, even if I didn't agree.