I find it useful being certain that an ordered item is coming on a certain day so that I don't have to worry about missing delivery and dealing with later collecting it. The additional services (Video/Music/Kindle Lending Library) are nice features if you make the most of them, which I do as I use no other media streaming services. I should probably say that I don't pay full price for Amazon Prime but pay the student rate (50%) which I find to be reasonable.