I like it a lot. I like James Cameron’s world building, and rendering of extreme amounts of detail. The effect is fantastic things seem plausible. For example, pay attention in Aliens to all of the warning signage on doors, equipment, weapons, etc, and also the unique sounds design of e.g., alarms. The weird looking interstellar space ships in Avatar are based on a feasible propulsion concept.

As many have pointed out, it’s not that unique of a plot. But I guess that’s not why I like the movie.