Prometheus fails on delivering the fire

To start out with this is the prequel film to Alien. AKA the origin of Alien. I saw the trailers and thought, hey this looks pretty good. It wasn't a bad film, but I have seen better prequel films. I have seen all the Alien films, Resurrection wasn't the best, but the other three were good. This just seemed to lack a bit of something, and the alien evolved way too fast to be logical, and it left questions at the end. If you know the alien franchise, then you'll know what questions. There is definitely one big question. Sometimes I tend to over think things.