Why was Prometheus (2012 movie) so bad?

Critics Consensus: Ridley Scott's ambitious quasi-prequel to Alien may not answer all of its big questions, but it's redeemed by its haunting visual grandeur and ... Movie Info. Ridley Scott, director of Alien and Blade Runner, returns to the genre he helped define. read more

Okay, there were a number of issues which distracted from what otherwise is an amazing film. Those set designs and equipment are stunning. Acting for the most part is good for this genera. read more

But I remembered how much backlash there was for Prometheus, and I curiously checked out the message boards, and the reception is still pretty negative. Unfortunately, it's hard to find actual reasons as to why people don't like the movie because Internet message boards are such a cesspool. So I'm wondering why Prometheus didn't work. read more