I'm sorry, but just saying "killing is killing" is oversimplifying things. Some "killing" is accidental, and some is justified. If I'm sitting at home and a guy is coming through my window, I'm gonna kill him. That is entirely different than an abortion, and to nearly anyone else, a homeowner killing a burglar is justified.

And to most people killing a violent murderer is justified. Especially a serial one. And in war, if your country is being invaded, again, either you kill the invading force, or you will be killed or at least be made to suffer.

There are some scenarios where killing is justified and necessary. Abortion isn't one of them.