The fans of this show, like to use the excuse that the negative reviews are only from un-reasoning fans of the original, who don't like the new version. So let's look at it objectively, regardless of the original.
What are the positives about the new Galactica? 1 - It's gritty, and feels realistic (atmospherically) 2 - The production quality is top-notch 3 - Imperfect characters with personal conflicts
And what are its failings? 1 - The gritty and realistic approach is so forced, as to negate its positive effects. Shaky camera work has its place, but this is one of those shows that tries so hard to use the technique, it makes NYPD look like it was shot with a tripod. Over compensation. It's as though the film makers are embarrassed to be making Science Fiction, and try their hardest to hide the fact. 2 - The production quality IS top-notch, but so were the new Star Wars films, and I think most people would agree, they weren't anywhere near what they could've been. 3 - The characters are SO imperfect, that they become unrealistic caricatures, and the viewer loses any sympathy whatsoever for the leads. Also, not ALL humans are selfish, self-absorbed nihilists. If this show wanted to be realistic, at least SOME of the characters WOULD be good people (Who can still make the odd mistake).
Many of the fans claim this is superior television, because "it isn't scifi, it's drama". They show a complete lack of knowledge for the genre they are criticising. Their view of SF is probably dictated by a few old Star Trek:TNG episodes they saw as youngsters. "It's all about bug-eyed monsters, and men with pointy ears". The truth is, most television Science Fiction is easily accessible, because it has to appeal to the masses, but all good science fiction is dramatic, thought provoking, challenging stuff that goes beyond our pre-conceptions. It makes us THINK.
Yet the new Galactica does its best never to challenge the viewer. You will never have a plot that couldn't be directly transplanted to a soap-opera, or political/military drama. In fact, it doesn't even try to disguise this, but simply lifts its plots from the latest headlines. (Why write something thought provoking and original, when you can appear daring and cutting edge, by just watching the news for your plots?)
They are right when they say this isn't science fiction, but what they don't understand, is that it isn't a good thing.