I think there is a difference between wrong and atrocity. Serial killing is an atrocity. Genocide is an atrocity. Men slitting their own wife and children's' throats is an atrocity.

An unsuccessful attempt at murder is not on that same level as atrocity.

Wrong comes in degrees. If you tried to kill them and didn't, then they still have a chance at life. It's not the same as actually taking a life.