It's not like I actually ENJOY killing off characters.
...most of the time.
I am in the belief that the characters tell me what to do, usually. Sure, I have a good deal of control overall, but when I write something that they don't like, they'll let me know by hogtying my muse and leaving a ransom note.
And sometimes, a story just demands to be written, and you can't get it out of your head until you do.
But the evillness is all me. Definatley.