Ya know - "Do we deserve to survive" would never, ever occur to me. And I certainly wouldn't put up with Cylon lecturing me on it...
Don't take it so literally. Think of it more as paying for our sins and showing we really are a better, more moral race than the Cylons and thus deserve to rule. Everybody thought of the Cylons as the bad guys without asking whether the humans were actually the good guys (not a morally relative "well, we're better than the Cylons" but an absolute morality). Remember, this came at a time where both commanders were plotting seriously immoral "end justifies the means" actions.
I do like how this concept flipped to the Cylons, who started wondering whether they were the good guys. Unfortunately for the humans, the current president is about as amoral as it gets.