Why? No telling how many innocent babes will have a chance now that the monster is dead! He had to be stopped in any way possible. Obama is only upset because Tiller did not kill enough for his taste. (He is especially fond of murder in the late term or after delivery.)
While I understand your statement about killing the innocent, You can not justify killing the Doctor within the same logic. I feel the same as you but can NOT justify killing of the Doctor. I under stand that you may justify that by saying that lives were saved, but in this instance, others would have performed the same function.
So, you can either protest or kill - I could not in any way justify killing another human being for any reason except self defense. So...what are your reasonings for killing?