I don't have a problem mowing down enemies in most games as it is a kill or be killed situation and you need to do it in order to progress the game.
I also don't mind killing big daddies in bioshock as I need the adam and rewards they give, plus I think I am probably doing them a favour.
What I did struggle with was harvesting the little sisters. I could never bring myself to do that in bioshock 1 or 2.
I also felt bad about killing saren and the rachni queen in ME1, but that didn't stop me doing it on my renegade playthrough.
I however, feel absolutely no guilt about killing enemies in borderlands, especially as my berserker character seems to be enjoying himself so much as he does it!
I also don't mind killing big daddies in bioshock as I need the adam and rewards they give, plus I think I am probably doing them a favour.
What I did struggle with was harvesting the little sisters. I could never bring myself to do that in bioshock 1 or 2.
I also felt bad about killing saren and the rachni queen in ME1, but that didn't stop me doing it on my renegade playthrough.
I however, feel absolutely no guilt about killing enemies in borderlands, especially as my berserker character seems to be enjoying himself so much as he does it!