After building iTunes libraries on multiple computers in a single household, multiple iPhones, iPods, and now an Android phone, I can say that I honestly miss having music on a CD that I could rip/play anywhere and I felt like I really owned it. The old book of CD's actually feels psychologically easier to manage than 4 different iTunes + Amazon mp3 libraries.
Over two years ago I bought an Alpine head unit for my car that doesn't even take CDs. It has an iPod jack, a USB jack, and an 1/8" audio jack. The day before I installed that was the last day I even considered buying or burning audio CDs.
