Resale value purposes, a non scratched ipod that has been in a case since day 1 has much better value on the secondary market then one that looks abused. I know I am gonna want to sell this thing eventually even if its 2 years from now (and I haven't even bought it yet, heh) cause iPods become outdated so quickly. Overall its worth a couple bucks for a case to protect it for this reason alone considering you can get cases that offer even basic protection so cheaply these days.. Also some people want to keep their stuff looking nice and neat as possible especially when spending a good chunk of money on it.