I'm not doing a disservice to Coldplay because I also buy duplicates which I also listen to, when you think I have the CD and the Vinyl versions plus I buy an extra CD which I also play for my own personal use, I have all the those in my collection converted onto my pc so I can listen to them while using my pc or just to relax and listen to on the sofa. Those that have remained sealed I have managed to get from friends or associates to convert. This way I don't devalue the rare discs and wear out the sleeves and covers. Acetate CD's lose their quality after they have been played once, and are very delicate, using alcohol based cleaners will destroy them completely therefore only distilled water should be used. If you want to play you collection then that is your prerogative and the same for those that don't wish to play their valuable collection.