I find it funny the different reactions people have to the same thing. I, personally, have re-watched BSG at least 5 or 6 times, and I still completely love it. Yeah, a lot of the characters are awful people. Some started off that way, and others became awful people throughout the course of the show. I think we have to remember just how hard
their lives had become. Hell, most of them only had one or two pairs or clothes to wear, and they didn't even have the resources to bathe regularly. That alone would make me a very cranky person.
I think Lee Adama's speech at the end of Season 3 does a good job explaining the political situation. They're not a civilization anymore; they're a gang, and they have to fight to survive. Unfortunately, sometimes that meant throwing democracy out the window.
I thought the show was great. Behind "Lost," I think it has the greatest series finale I've seen.