I'm against this law. You cannot have a law that allows murder to be legal, which this does. It is always illegal. Judges, in rare circumstances, may rule otherwise, but it should never become a fact in law.
Killing is the final act. There should be no sanctity for killers, as they should always have sought another solution. If that were not available, then others will treat them with justice and compassion, as has been done in the past and will be done again in the future.