A good movie in general, but I have some nitpicking to do.

Rating: 7/10 (10 February 2015)

(The first paragraph is just my opinion on why everyone thinks this movie is bad, and why I disagree. If you want to just see me nitpicking the movie, skip the first paragraph)
First off, before we even delve into our review of this movie, I would just like to say that over all the movie was pretty good. I, as well as numerous others (and maybe even you) have seen a plentiful count of negative reviews on this movie, but my guess for that is they were just expecting too much. I, being a not-so-passionate fan of the Alien franchise (only having seen the first Alien movie) was not super-duper hyped when watching Prometheus. I did not look at Prometheus as a fountain that spat out potential and perfection, I just came into the movie expecting to watch a normal sci-fi/horror. Therefor, my hopes did not crash into the ground catastrophically, however many die-hard Alien fans may have been disappointed for whatever reason.
Anyways, jumping on to the nitpicking.
A: We should acknowledge the fact that this crew on Prometheus consists of "scientists". As scientists, they should not have done a lot of the stupid things that they did in this movie. Holloway foolishly yanks off his helmet when they are inside the cavern/spaceship just because their devices read "breathable air". What's worse, is that Holloway manages to single handedly peer pressure his entire crew into doing the same thing. Okay, yes. There is Oxygen in the air. Congratulations. Let's yank off our helmets despite the fact that there could be many other threats not detected, such as air-born microbes! Also, Milburn just tries to casually pet an alien snake that ends up choking him and spraying acid all over his buddy. It's an alien life form, just because it looks like a friendly garden snake doesn't mean it's a friendly garden snake.
B: Weyland, perhaps he's grown old and senile. He packs himself inside a hidden cryo-sleep chamber to travel across the universe so he can talk to an alien life form that he isn't even sure exists. This is supposedly in an attempt save him from the grasps of death, but no one even knows anything about those Engineers, much less if they even exist! (Of course, it just so happens that they do exist, other wise we couldn't have this movie..). And whether or not this Engineer was friendly? Weyland just completely ignored that and walks right up to the engineer asking for eternal life through David's mouth. Not surprisingly, everyone in that room (except Shaw) gets pummeled to death.
C: As the underground hanger for the alien spaceship begins to open up right beneath Shaw, she is seen running for her life and hopping over crevices, one jump nearly killing her. After she tells Janek about the alien's malicious intent to kill everything on earth, she just casually strolls off the retracting floor to more stable ground. She couldn't have just done that in the first place? She had to jump across two pits, THEN walk off the moving platforms? She could have just walked off the moving floor from where she originally was. I guess you can't have an intense escape scene without throwing in parkour some how.
D: Janek, with his two co-pilots, crash their ship into the alien spaceship in a heroic attempt to make sure it doesn't reach earth. This leaves Vickers and Shaw on the ground, with a very heavy space ship about to fall on them. The shape of this ship is akin to a donut, except one small segment is missing. This causes it to roll towards the two survivors, threatening to crush them. The two women then panic and run for their lives, in the opposite direction of the rolling rather than just running to the side. This is perhaps the scene that made me cringe the most (other than the ceasarean surgery, which made me cringe out of sheer disgust, not "UGH WHY WOULD YOU DO THAT?!"-ness). It's like when an avalanche is about to run you over. You don't run/ski AWAY from it, you run/ski to the left/right.
Now don't take these negative remarks as me saying "this movie sucked, don't watch it!!". The movie itself was still pretty good, I just felt I should mention these plot holes that kind of made me face palm when I was watching.
Also, on a completely different note, don't watch this if you're squeamish. There are a lot of disturbing scenes (such as the ceasarean surgery I mentioned above).