Battlestar Galactica could have ended with Admiral Adama and President Roslin flying off happily into the sunset, but the series was never that sort of show.
It was an ending that was extremely emotional and touching, and like the Six Feet Under finale, I cry every time I watch it.
Ultimately, these reminders from the cast and crew give us insights into how Battlestar Galactica could have been very different if even one or two decisions had been made differently.