But worse than all the "breaking the cycle" crap and angels mumbo jumbo is the idea BSG promotes that somehow anything is okay if you do it for Love. Let me illustrate exactly what I'm talking about here.
Athena murders two people over the course of the series, but she does it because of her daughter so she gets a free pass.
Tyrol helps Boomer escape unknowingly making himself an accessory to Hera's kidnapping. He gets a pass because he did it out of Love.
Tyrol murders Tory causing the extinction of one civilization and the death of who knows how many of his own people in the process. He gets a pass because he did it because of his beloved Callie (who he hated by his own admission and who's illigetimate child he doesn't think twice about dumping on somebody else when he finds out the kid isn't his).
Roslin, who once tried to shoot Starbuck in the face because she thought she might be a Cylon, decides not to let Baltar die (or even stand trial) for his part in the death of billions, because an "angel" tells her to Love her fellow man.
Anders blows Gaeta's leg off. Does it for his wife so its cool.
Col Tigh Knocks up a prisoner. It's cool. He loves her.
Baltar helps engineer the destruction of humanity, follows it up with four years of self serving lies, deception, manipulation and treachery. But he loves Caprica Six so it's cool.
What does everyone else get? What about the people who did what they thought was right or did stupid things just because people do stupid things?
Boomer. Executed.
Gaeta. Executed.
Jammer. Executed.
Racetrack & Skulls. Dead.
Kat. Dead
Crashdown. Executed (by Baltar no less.)
So in the BSG Universe love does conquer all. Just don't fuck up for any other reason or its a bullet in the head and a swim out of the airlock.