Totally agree on this point especially. Earth could be a near-apocalyptic wasteland for all we know in the Alienverse. Heck, it might as well be post-apocalyptic with half (or more) of humanity wiped out, since the movies have established that there are space "cargo trucks" and galaxy-faring starships (I mean why else would things like these be built?). We know virtually nothing about Weyland-Yutani either - the only movies that have actually shown Weyland and Yutani were the AvP movies, but we don't know anything else about "the company" that's constantly mentioned in name in the movies. I mean heck, I'd be interesting in seeing the formation of Weyland-Yutani and the first spaceships that they send out and the first extraterrestrial lifeforms they collect, with the science & political intrigue that might come from company scientists and/or executives. That could've been a TV series right there - maybe it sounds like Star Trek a bit with that description, but would definitely be something I'd watch.