I own close to 10.000 CDs and LPs, the latter may be 10 to 15% as I keep only LPs that are not on CD or the latter sound inferior. I have a hard drive filled with MP3s etc. but rarely use it. I tend to burn CDs of the music I want to listen to more often. I rarely stream music, I do not want to pay for any service that I probably will not use that often, and I would have to change my hifi setup to do so. I have more music that I will have time to listen to, and I am still buying too much. I will have to downsize sooner or later, which I already do with my library once a year to keep it at its size, but need a second hand dealer for that. I sell my used books myself at a satisfactory rate, but am unsure about selling discs myself at current shipping rates and all the effort that goes into the process.
And I love reading liner notes.