Got this from http://www.nuklearpower.com/
It's strange. I am drawn, like a spacemoth to the Hawking Radiation, to being the most unselfishly heroic tool in all of these morality games: your KOTORs, your Fallout 3s, your Fable 2s, etc.
Something just, I don't know, happens.
Partly I think we can blame how choices in these games are presented to the player. You all know the standard joke here, but I'm rolling with it anyway. To wit: Essentially, you are given a situation to which you may respond with an array of dialog choices. These invariably range from A) Inhumanly saint-like, to B) Casual indifference, to C) I will murder everything you ever loved via skullfucking.
The problem is that I, personally, fall somewhere between A and B. Maybe an A.1) Merely saint-like. Y'know, like in real life. So, A comes on a little strong while B is basically rude. And C, well, that's super rude. Some games manage to make their choices more nuanced than others, but you're still basically looking at A, B, and C.
To my mind, Fable 2 comes off the strongest here because there aren't dialog options. Since your actions alone determine your morality, there's no weird disconnect between the professed beliefs of your avatar and your intents as a player. Conversely, half the charm of Fallout 3 is in its dialog. Plus you get to say one thing and do another! Both good and evil pale before the might of the bastard alignment.