Vinyl is just too impractical for being on the move; so is CD really. Most of my music is on my iphone, even in the car I hook it in the AUX port. I know it's lame but it really does make sense when many of your CDs are rare, OOP, first presses, collectible etc.
I don't care if my smart phone gets stolen, I can just buy another exactly like it the next day. I would flip the fuck out if I lost my old copies of Immense Intense Suspense, Slaughtersun, Finis Malorum, Det Frysende Nordariket, Ames De Marbre, A Velvet Creation, Oneiricon, Folkoric Necro Metal, Nespithe, Blod Draum, Sorrow, Thousand Swords with the BW cover etc.