Yeah its the first word that came to me.
Its like Larian thought the people that like playing evil do it for the pleasure of it.
The only type of person this might appeal to is someone that likes hurting others just for the sake of it rather than some other ultarior motive.
And most of the time going evil involves MORE work... so why would I do something more difficult for little to no reward? Not to mention storywise things would be limiting. If I kill the Tieflings I won't see them when I reach Baldur's gate! I can't take advantage of all the advantages they could offer me.
So why should I be evil again?
Maybe I should be allowed to enslave the Tieflings and get the advantages through slavery instead of friendship.
Mol is setting up a thieve's guild right? So what if I become the big boss and if Mol doesn't behave then I threaten to kill his friends.
This is the perfect balance of being evil I think.
Even Anakin killing younglings did it because he thought it was for the greater good.