Same here.   Religious people give their gods a pass all the time "God moves in mysterious ways", etc.   Even in the secular world, "Act of God" is a legal term meaning something that no one could foresee or prevent - and it's usually something awful.   I'm not a religious person, but I'm of the opinion that if you really could ask your "creator" what the deal is, you might well get an answer you won't like, or even understand.   

For me, the movie dealt with that whole issue in the brief exchange with David about why humans created androids and he gets told "Because we could."   That's what I think the movie wanted to be about, maybe in some former draft.  Almost all of the characters wanted to meet their Maker because of some personal goal  - enlightenment, knowledge, profit, immortality... and watching a variety of interesting characters go about seeking those different goals is a perfectly workable frame to hang a movie on.

Except... they all went about it by doing a lot of silly unmotivated things, and meanwhile there wasn't a single branch of science that didn't get misused and mangled, which was painful.   And in the end, the one character who seemed to have learned something ("We were SO WRONG") then sets out to do the same thing again.   Ptui.

If there's any common theme to the Alien series, it's "leave that thing alone and go home".   There's a character in each movie who says something close to that, and they're always right.      In Prometheus, Geologist Soccer Hooligan Hudson says it, and he's right... but then everything he does after that is inexplicably stupid, just like every other character.    Double ptui.

agreed.