I completely agree with david_ten. Years go by, unless you have oodles of money, we make changes slowly. Our brains change slowly. Our ears change slowly. Our perception changes slowly. What we never imagined may all of a sudden be reality. All of a sudden a mismatch may become a match and the opposite. For instance, I have had some Roxy Music vinyl in my collection for a long time. Never cared for it. Tonight, I said let's give it a chance and loved it. Why? No clue. But sounded fabulous. Same system as last 5 years. Nobody ever takes into account aging as a major factor in this hobby. Why not? Every other aspect of society does. I can't imagine that I hear the music anything close to that which I did 20 years ago. Still love it the same. Actually, love it more. My brain now loves the sound, the variation, the skill, the talent, the time and artistry it took to create the recording. In the end however, it is still my ears sending the data through a neuro network of past memories to my brain and down to the pleasure receptors in my body which make the experience. Any hiccup in that chain results in alteration of perception and thus one's interpretation of the beauty.