phew, you had a lot of pent-up criticism inside you. I suggest you post more frequently now on the board, that way you wont have to let it all out in one huge explosion like that, instead you can meter out your criticism in a healthier back-and-forth discussion format, trust me it's much more fun!
anyway, I certainly can't change your opinion on the film, however I do take issue with some of your points. Yes, the ideas of infertility and the new society were sort of glazed over in the film, but I saw that as a consequence on the focus of this small micro-story within the overall situation. If Cuaron had decided to switch focus to the broader scheme, I feel like the film would have lost the touching and intimate story of Theo and his troubles. Plus, haven't we had enough of these epic sci-fi films that show the reshaping of the world (V for Vendetta case in point)? Why not focus on a small, important aspect of this broad canvas? personally I feel that for this same focused portrayal of the characters made Blade Runner such a fantastic film.
Also, in regards to the uncut battle-scene, I didn't appreciate that just because of the technical difficulty involved. I felt like it's nature, being prolonged to such a degree, sort of induced a more personal feeling of the struggle and the chaos that Theo and others were dealing with.
Anyway, I my points aren't thought out very well, but there's a rough sketch on my opinion of my favorite film of 2006