I didn't really have a lot of preconceptions about "District 9" - I knew it was about aliens kept in an internment compound, but that was about it.
It turned out to be a story about one person, and how that person's feelings change based on the reality he is experiencing, and it was really, really good.
Until about the last third, when it morphed into a bloated, shoot-em-up, CGI-laden extravaganza. I didn't like that part much, but I'm sure people who like that kind of thing loved it.
So? Sure! People who like a more "human" story will like the first part, and people who like special-effects-laden over-the-top stuff will like the last part. Everybody's happy.