I'm too cheap to get an unlimited data account and I don't want to use up my mobile data. I have a separate ipod touch for my music, so it frees up space on my actual phone, so if one gets broken/lost/stolen, I'm not completely out of everything. Plus, I like the idea of actually "owning" my stuff, as much as you can own digital files. After my Dad passed, I picked up all his mp3s he had saved and merged them into my library, so I also like the idea of potentially passing on this collected library to my kids (if they care enough or the world hasn't transitioned completely to streaming music when I die).