Wow! Lots O' haters.
I try not to dissect films too much. If I'm entertained, then good enough for me. I was entertained by Prometheus. Sure, there are some holes, but overall, I thought it was imaginitive, well acted (Fassbender), and well filmed. Ridley Scott can do no wrong, as far as I'm concerned.
Low-key... so do you think mankind was seeded then?
Absolutely. As I said in a previous post, the theory makes more sense in my feeble little brain than the idea of a sky genie with a magic wand.