To be honest, the main benefit of Amazon Prime is probably their "next day" delivery. Whilst I've had some issues with it recently, the idea of being able to order something in the afternoon and have it the following day (even on weekends) is pretty convenient.
In terms of Prime Video (which is part of the benefits of having Amazon Prime)... I had it and it's okay, although I think Netflix is far better. Prime Video has some normal shows which save you from having to buy them, then they have their own shows too. But it's like a cut-down version of Netflix tbh.