Circumstantially based, but in general there is not a limit.
In Halo I find myself taking out platoons of Unggoy while they run screaming for their lives; on occasion walking them down into a choke and crushing their heads while they cower in terror.
Whereas in Fable I'll not even consider aggression towards anyone that is not attacking me; in so far as the situation allows.
In Minecraft I'll not think twice about knocking a sheep off a cliff; as it not only poses the risk of pushing me off, but more so that it is simply a dumb program. Of course, conversely one could argue something similar about biological life to a degree...
And in Starcraft II we'll see a bloody bath of death and carnage on both sides, where a primary goal of mine is to minimize losses on my side; not only in effort to assist in victory, but more that I do not want to see my units needlessly die. When the situation permitted I've gone so far as to transfuse hydralisks.
an874 said:
Incidentally, this is why I had no trouble playing as a female in Mass Effect despite being a guy.
More often than not, I've found myself playing as a female character. Usually based upon what I find to be aesthetically appealing in whatever game I find myself in. Mass Effect is a great example of this, where I think the males looked terrible I strongly favored playing female.
Of course, ironically my sexual preferences do not change in game, regardless of my characters gender; and so Shepard for me has always been in same sex relationships: enter the recent rabid rage of a proposed 'gay' male Shepard.
Silly rabbit, Trix are for kids.