What is funny about this discussion is that everyone above level 5 is a mass murderer and that's okay.
Sure, the bandits attacked the defenseless traveler bearing down on their campfire waving an axe looking to grind his one-handed skills. Sure, those Imperial posers tried to rob you. And yes, you joined a band of freedom fighters with racial and religious reasons and AK-47s to liberate Syria Skyrim by exiling or killing everyone who isn't a Nord, or perhaps you joined the Empire that conquered united Skyrim in the first place to prevent the Thalmor from growing even stronger after the BJ they got from the Empire you're trying to save; one way or the other Skyrim is going to be pointy ears thanks to your interference. I assume you also burned a few people alive with fire spells, killed a bunch of forsworn for fighting back against the Nords and/or used the peaceful teachings of the Way of the Voice to bring peace knock rabbits off mountains.
Everyone is a bastard in some way, but those aren't people.
What? We're just going to have to agree to disagree there. I can't accept that killing characters, that would not hesitate to kill me, makes me a bastard. I also feel to see the relevance of this response.
Are you trying to say we're all like the rapist or what? I'm just honestly confused here so I needs some clarification.
Also, I am with you Monkinsane. They chose daedra worship, but I also agree with you Frosty that things aren't so simple and if my post made it seem like it was, I apologize.
I am just saying that in life, we always have a choice. We may not like our options, but we always have them.
You find yourself in an unwinnable situation and the person says to you, "Drink this poison that will certainly kill you or worship and satisfy this demon," and despite the fact that many people would choose different options from one another including the classic, "I don't care if it is unwinnable, this demon I'm going out fighting so I would charge one of them and die that way!" people will often say they had no choice.
I'm not saying she was wrong for her choice. I'm not saying that I didn't understand her choice. I am just saying that the particular character I played at that time due to his choices, would have attempted to end her life due to her choices. No malice or anything. It's just the way things worked out.
Mind you, I feel like we may have gotten away from the original point of this thread. I am pretty sure that this was only about being frustrated that there was nothing we could do to right the wrongs of Molag if we so desired to try... and also about being upset that there was no way to oppose any of the daedric princes.
It's do the quest, or stare at it constantly in your journal (unless you have a mod)
So much of it depends on perspective....You know a murderous Bandit is hiding away in a Keep your ambling past....you know if you looked a soft target that Bandit will kill you for any possessions you have....you ignore the threat he poses because he doesn't attack you? I would call hunting Bandits a public service and civivc duty myself....ensuring they are unable to continue to harm those who can't protect themselves.
As for the Civil War...your examples are some what more complicated than you choose to present them.
Forsworn...simple self defense, they attack you along the road....Never hurt a Rabbit or set someone alight myself, can't speak for that.... 
Back to the Thread intention....Fighting back: It is easy to say I would rather die standing and fighting back than live on my knees and worship...a pretty scarey choice if it were real, but how each of us would respond if this were real is irrelevant ...Our Dovah's should at least have the option to a least say FU....rather than a polite little note in our Journals, indicating more of a 'Yes, my mighty Lord' ...than a 'I would rather die than serve you'....I completely understand and accept that a Daedric Lord is well beyond our Dovah's ability to destroy, but "encouraging" our Dovah's to play favorite pet with these Daedric beings peeves me.
Some people retaliate to this argument with you don't have to do everything in your Journal....I feel aside from my annoyance at the lack of choices....whether you choose to continue the quest or not, you are not always left a great deal of choice...I remember in one game my Dovah telling Molag Bal in fact to go jump and later went on to do the 'Rescue the Kid' Dibellan Quest....he battles his way through to the child's location...the cage she is in and guess who's in the cage with her, standing in front of her in fact, so I can't ignore him to speak to the child, I have to get him to move out of the way first....the Priest Molag Bal wanted me to find....
....No, I didn't feel forced at all.... 
There does need to be more in game choice if Bethesda wants to continue with forced Quests.....Serana's immediate BFF status is another example.... 