Sigourney Weaver was nominated for an Oscar for Aliens. Which, for a sci-fi/action movie in 1986 was absolutely unheard of. Show me all the other "generic action movies" (especially genre films) with Best Acting nominations please. Ripley's relationship with Newt was the heart and emotional core of Aliens (something which I might add, Alien entirely lacked), not a "desperate attempt to move the viewers".
Soldiers that get scared? You mean like every movie that attempts to portray combat with a hint of realism? Were the soldiers crying for their mothers on the beach in Saving Private Ryan "wimps" to you? You'd prefer a a bunch of fearless "ra ra ra!" macho clichés? Aliens is a metaphor for Vietnam, from tones of imperialism, failures in leadership, and themes of overconfidence and hubris. Or as Cameron himself put it: "Their training and technology are inappropriate for the specifics, and that can be seen as analogous to the inability of the superior American firepower to conquer the unseen enemy in Vietnam: a lot of firepower and very little wisdom, and it didn’t work".
In addition to its accolades, appearing on many "best of all time" lists, and cult status 30 years later, it has a 98% on RottenTomatoes, and is ranked the 64th highest film in IMDB's Top 250.
None of the above means your opinion of the movie is "wrong". But maybe, just maybe, you should consider the fact that your opinion is strictly in the minority on this one. Have a nice day.