It's worth it to me. When I get things, I want them fast and prime delivery is great. More importantly, I have my things delivered to the store which is a few minutes away. There are a lot of students and other young people in the apartment complex where I live. Unlike me, they tend to steal. The front office warned me when I move in that there's no pickup in the front office and I might want to have things delivered at my job (which is not something I want to do), so I'll cough up the less then 2 dollars a month.
That and I actually watch Prime movies, because I like old movies (same with Netflix), and if I really want to watch something new I will rent it off Prime. Used to stream pirated movies, but I got a cease and desist from my cable provider so I guess I will pay up.