I agree with this and I didn't like Guardians at all, easily the Marvel movie I liked the least. Maybe I just came to accept it and the whole space theme had to eventually join the main avenger theme. Ultimately, its a comic book movie. It has to make some choices about being true to the theme generally (though i read the real infinity gem war wasn't the avengers at all), rather than become more pseudo believable like some of the other space scifis. I mean, the avengers were hunting nazis after all, and this was before the Democrats started imagining nazis also.