One of the things you get from a CD that you don't get from a generated spotify playlist, is that albums (at least back in the day, or perhaps at least good ones) order their songs in a specific order so that playing from the start through to the end is an experience.
I tried to find my old CD collection a few years back and couldn't. I had a whole folder full of CDs, but the only thing I could find was the empty cases 🙁