Well, the intelligent leader alien and his son definately wanted to leave; hence the huge trouble they went to and years of effort just to get repairs made in order to return. The worker drones who were even dumber than your average on the street American didn't seem to have much of an opinion about anything. I felt compassion for them, but I'm not even sure that I consider them sentient. Well, they *could* talk. Then again, so can many animals, when taught by humans. But yes, I too am wondering what issues this movie brought up for you?
It will make an awesome sequel, where the aliens return and kick ass for all they abuse they have been taking..