Like anything else, some people get Firefly/Serenity, some people don't. James don't.
When Firefly first aired, I was prepared to be unimpressed by it, simply because combining western themes with space opera seemed old and tiresome...not to mention a way of cutting production costs.
However, it didn't take me long to realize that Joss Whedon had accomplished something very special.
Not only did he manage to evoke the atmosphere of the old pulp western/space opera form (reminiscent of Leigh Brackett's Eric John Stark, Catherine Moore's Northwest Smith and Edmond Hamilton's Starwolf), he did it in a way that came off as very believable within context.
But he also knew to overcome the shortcomings of weekly TV production, the characters would have to carry the series.
The Firefly/Serenity cast of characters are multi-layered, eccentric and certainly not presented as paragons of virtue...however, they also have senses of humor about themselves, which seperates them from the grim-as-death delivery and bare-tooth grimacing of the new Battlestar Galactica cast.
Not to mention the way space scenes were shot in Firefly was "borrowed" for BSG.
I have a little experience in crafting and maintaining an ongoing series and so maybe I'm able to recognize some of the more subtle elements Whedon worked in that kept the stories from falling into formula.
The driving force of the characters and therefore the series itself was not survival, or revenge or adventure. It was love...Simon's love for River, Mal's love for his ship and crew and their love for him.
In my opinion, Whedon pulled off what he was trying accomplish...otherwise, there wouldn't have been a Serenity.