Lee Adama became Al Gore.
No answers to anything. Plot hole after plot hole.
Useless flashbacks.
And an absurd ending. They would all die of disease.
All the BSG-Humans and Cylons did die out. That reference to Hera being the mitochondrial Eve of "us" humans means that the Cylons and BSG-Humans left no descendants.
So, yep, it was a stupid ending with the survivors essentially committing suicide.