I'll say it again, if you spend a ton of time trying to become emotionally vested with the characters, you will probably
dislike this movie. Normally, I prefer an emotional attachment to characters, but I didn't really care with this movie. The movie was more like an amusement park ride. The cast was not much more than other attendees around you that provided some emotional ambiance.
Also, I never understood the fascination with Ripley. I've seen Alien and Aliens, and Weaver's character doesn't seem to be much better than Rapace's character. It's been awhile since I've seen Alien, but if I recall, they did spend a little more time having other characters interact with Ripley. However, I wouldn't consider this substantial enough to consider the characters
that different.
Although, if you look at my previous posts, you'll see that I've made similar remarks as found in the review. I recall mentioning that Prometheus had some elements from the horror genre with how characters were more or less fodder for suspense/scares. Is this necessarily a bad thing? I think that depends on
what you were expecting from the movie.
Is Prometheus a great movie? No. I'd consider it a good movie that I did enjoy watching. Although, it certainly felt like more of a borderline popcorn flick, which tends to be a negative attribute that people apply to movies.