I didn't like the path they chose at the end. It's like they gave up. As long as we're working with an alternate history, why throw it all away? I know that they had a moral to the story in the last 60 seconds of the show, but they could have figured out some other way to express that moral without what I consider to be a really dumb premise. Read on for why...
Spoilers below.
It's all naturist nonsense... 90% or more of them would have died the first winter after throwing away the trappings of civilization in the name of a "fresh start", the "choices" they made would be nearly universally fatal within just a few weeks (I'm going to live alone on an island where there are no people... nonsense, he'd be dead in a week or two, tops), and their intentions would have meant absolutely nothing when they realized they would have to use their bare hands and spend their entire waking days just looking for food. Even the savages with their spears could have found them and taken them down the first time things got tough.
In short, the ending was nonsense, just a slow painful way to suicide, taking thousands of "innocents" (the civilians who probably had no choice in the matter) with them. In reality, the civilians would have fought those retard "leaders" who made that decision, and fought harder than they fought the cylons, because the leadership essentially killed everyone in a rather horrible way after working so hard to save their lives. There is no way in hell you could take people with their level of knowledge and culture, dump them into a raw natural environment, and expect a mere fraction to live past the first year. And the thousands who died would die by starvation, illness, or from otherwise "simple" injuries that would have to go untreated because they drove sick bay into the sun.
Dumb ending. The moral in the last 60 seconds probably tied up the whole show pretty well IMHO, but how it went down was idiocy, a mass murder/suicide plot.