I believe Ridley Scott is planning a new trilogy, and I also believe that the Engineer (Space Jockey) at the beginning sacrificed his life to create new life by spreading his DNA.
Perhaps humans became too advanced or they spread too much hate with war etc?
I totally understand the Guy Pearce thing, I couldn't take him seriously, looked like he had egg on his face.
I went in with many questions but came out with even more questions! Ha, I love it!
I hated the battle between those two beasties near the end, looked like something from a Godzilla vs. movie. But, I loved the outcome! Totally stoked for more.
I'm also curious as to why David infected that dude (forgot his name) I didn't think an android had jealousy or emotions, unless he was told to do so by someone else?