Personalities. Some are aligned to your thinking and others aren't. That doesn't mean they're evil or good. It means they have conflicting views with yours.
Right Cyan!
You took the words right out of my mouth. In the years I’ve read the forums, no matter what opinion (about any character), there will ALWAYS be someone else with a counter opinion. It is always interesting to me to sift thru their [so-called] “logic” as to WHY.
For example, some can’t differentiate the difference between good reasons to kill & bad reasons for killing – it’s all the SAME to them. They seem to think if we all put flowers in our hair & hold up peace signs – then BAD things and BAD people will just go away. 
They’re quick to say “wardens kill and Howe & Loghain kill, so what’s the difference?” Anyone with more than sawdust between their ears knows that if the following THREE (3) individuals were killed by grandma (with a pitchfork) consider the consequences. Do the 1st grade math:
Hitler – 6.6 million in genocide and 60 million dead in World War 2
Stalin – 20-30 million dead of his own people in death and concentration camps
Mao – 30-40 million of his own people starved to death & other atrocities
So it is pointless to argue with the Loghain lovers, Howe lovers, Illusive Man lovers. If you drill down deeper, you begin to see their reasons WHY. Do I really need to connect all the dots for you? I think not.
In every game (especially Mass Effect), the game designers really need a CONTRAST in characters with various assorted heroes, despicable villains, fruits, & nuts. Depending on your personal life’s background (that you’ve either succumbed to or overcome), you’re going to align yourself with one or two characters that are JUST LIKE YOU.
Unfortunately, that might give you a BLIND SIDE when you surround yourself with people telling you what you want to hear. I recall a Star Trek episode where the Enterprise is blasted. Everyone is knocked to the floor.
- Worf: Captain! We cannot take another hit like that!
- Troy-to-Piccard: I guess we didn’t tell them what they wanted to hear.
And in the movie Dirty Dozen, the sergeant and major are shoulder-to-shoulder with arms folded; watching the convicts train in the obstacle course:
- Major: well sergeant, how do you think this will turn out?
- Sergeant: Everything will go just fine….sir!
- Major: don’t tell me what I want to hear.
- Sergeant: I think the first opportunity one of these scumbags gets, he will put a bullet in your head
- Major: thank you!
Unfortunately in business, the FORMER is the rule (tell the idiot management what they want to hear). I for one, don’t want to be surrounded by a bunch of YES-men. The first time I played the game I romanced Morrigan (and the last time). Though IMO both Morrigan and Sten are jerks, they are not despicable back-stabbers as in the Machiavellian (rat-race) business world.
TRUST is the key. Morrigan & Sten struggle with their problems as we all do. Until you reach 40, you probably can’t relate to that. The reason rabble rousers go to college campuses to recruit a “rent-a-mob” because that bunch has been programmed with opinions lacking substance they can’t defend.
I love Mass Effect and DAO because there is no stupid Judas betrayals in my crew. Alternatively, I will NEVER buy a game sequel where I’m betrayed by my boss or comrades (Assassin’s Creed, Bio Shock, Dead Space etc). To me, that is the "smoke & mirrors" (lacking creativity) that musicians do (who have no skill).
I love discovering and unfolding the characters in ALL my games. Let’s not browbeat someone because they spent most of their early lives going thru garbage cans. Been in their shoes? Obviously when there’s no more character discover, I have my preferences. My crew consists mainly of my sweetheart Leliana with Winne, and Alistair. Yes, Alistair needs a spanking – but sorry he’s not as perfect as some of you on the forum.
WOW!
They even COMPLIMENT each other instead of having a contest -- of who can outdo each other in insults.