Being evil in Fallout 3 is so loving lame. I would say almost as lame as Fallout 4 but at least in Fallout 4 you don't have your daddy telling you that you've been a bad boy.
Blow up megaton for a penthouse suite.
Enslave people for cash.
Kill people on crowleys hit list for even more money.
You can even lie and get a kid kicked out of church just for the hell of it.
You totaly have the choice to steal and kill from anyone you come across so long as they are not a child or storyline related.
And then you find your daddy and says he'll have a stern talking to you when he gets home about your misdeeds!!!
Of course I can't kill my own loving father in the game. So a real evil route would be tracking down your father to kill him because he left you. But since I can't actually kill him then the immersion of being evil is loving gone and I'm actually looking for him to reunite with him.