the number one argument that the movie is good is that there are deep debates about the meaning of life all over the internet and on SHH. this is not true.
because the truth is that its hard to talk about this movie in general because almost nothing is clear. everything is vague. and thats why the whole internet concentrated on the script problems IMO.
i like avatar. i watched it 3 times in the theater. but its a fact that its the most cliched most predictable blockbuster ever. a 5 month old baby would know the story when watching the movie. its that obvoius. i admit it because its to obvious. the problem with prometheus IMO is that there is waaaay to much denial. and i am not talking about you . i know what you liked and didnt like.
for the love of the almighty we dont even know why David poisened Holloway. how can we discuss this movie? no and nooooooooo its not the same like Alien and Blade Runner. both movies had a clear story. everything before and after that is vague and can be debated. but the story was clear and we knew what was going on.
I'm not going to engage in the Prometheus stuff because I could go into a long diatribe about why David infected Holloway (short answer: Weyland told David to test it on somebody, it's left up to the audience to decide if David chose Holloway as the subject) or about the allusions to Sumerian mythology in the film's beginning. But you won't care, because you think the movie has nothing to offer and is too vague.
So instead, let's look at Blade Runner for a second.
If the Blade Runners know what the escaped Replicants look like (as they show Deckard a video of their faces and profiles), how did they not know who that guy was at the beginning they were testing?
How did Batty escape and what was Batty's motivation beyond wanting more life? Why did he kill his maker and spare Deckard?
What are those little things that jump on Deckard's car? They're not explained.
Why introduce Sanderon's pet toys when they're not fully explored beyond that one scene?
Why is that one replicant a stripper if she knows she only has weeks, if not days, to live and knows that her face is on a bulletin for Blade Runners? Why "hide" in such a literally exposed place?
What is going on Off-World and what are things like the Fires of Orion and Moon Beams?
How did they know Deckard dreams of unicorns? And if he's a replicant how can he perform those tests on replicants without dysfunctioning himself? And if he's not a replicant why do his eyes glow red? If he is one, why do they spare Sean Young and program him to be rebellious and antagonistic to his boss?
If Sean Young's replicant has gone AWOL and needs to be taken out, why didn't her company or the cops check her home apartment where she was until five seconds ago when Deckard called her to come to the strip-club/bar?
Why did the stripper replicant and the one at the beginning have an apartment with photos if they literally just made it to Earth when he's being interviewed at the beginning?
There are gaping holes in BR if you want to look for them.