If people can't do something really simple like follow a marked kill order even after being requested to, I am perfectly willing to let them die until they learn to follow basic instructions, or leave in frustration.

Don't care if anyone thinks that's morally "wrong" or whatever for a healer to do. I am not there to babysit twits. You do your job right, and I'll do mine. If you clearly don't give a rat's ass, why should I?