Interesting. An Alien virgin always tastes so sweet.
The one thought that zipped through my headspace repeatedly when reading your lines was this:
You are supposed to side with the humans, not the vagina crab impregnator monster or the dickhead killer manbeast monster.
There are repeated hints and nudges and stabs at capitalist entities or the military-industrial complex to be picked up along the way, if you're so inclined. To me, it's mainly about making an entertaining movie and a microwavable dish of reflections on human nature. Oh, and I absolutey love Weaver's portrayal of Ripley, that was the most inspiring thing I've seen up to that point in time. A female hero, a warrior queen fighting a multi-phallic monster with a dickhead, a protractable mouth inside a mouth, a face like death personified and a tail that could be used to grill shishkabobs and marshmallows on an open fire or run you through like it's no business at all. Gotta love that.
There is very little 'human' and nothing 'humane' about the Alien creature, and I think if you find yourself romantically entangled with the beast, you really need to either seek therapy to dispel your detachment from the human condition or continue watching the other Alien movies, in chronological order of their respective release dates. Here's my short list for reference:
Alien: Must-see movie that continues to inspire all sorts of space horror (and nightmares)
Aliens: Must-see action movie, different from the first one, just as inspiring (less horror, more gadgets)
Alien 3: Brown weaksauce of WTF, some cheap laughs, plenty more dicks
Alien (4): Resurrection: The beginning of random chaos, writers ruining things and directors not having a clue about what's going on and why they suck
Prometheus: Fuck movies, fuck prequels, fuck origin stories.
It is absolutely natural to feel sorry for the franchise at around 3 or 4, and turn misanthropic by the end credits of Prometheus rolling. Since you're already way off my chart after seeing but the first one, I do beg you to keep us posted on what you think of the other Alien movies.
The Aliens vs. Predator abominations are not Alien movies, they're more like mental belly button fluff or those abominable things you find in the bargain bin or in the 'Vampyres vs. Werewolves' drawer. It's licensed, empty-caloried shlock for the feeble minded.
Oh, and: Fuck Ash. Ash was absolutely happy with every single human being dying or at least being turned into a cryostasis hatchery for alien warriors that would then be used and marketed as weapons of mass destruction. Bonus round: Fuck Ash!