I'm fine with sim's dying. (matter of fact, my sim was in the library when a random sim she was socializing died..First time I saw Grim reaper in the game.)
While it annoyed me a few times, I realize that its gonna happen. While, I don't like to kill them, I had sims die on me.
Yet, everyone plays differently. It's a game.
I guess we do, sometimes, get attached to them. I know I do.
I don't like playing the premade town people though..
Yet, I would never outright kill a sim.
Still, I don't mind other people killing them. It is a game. I see it no different as to opeing a role play thread (another site) and have at it with the characters.