I think there should be another option, but I don't know how to word it briefly. I think that, in crimes of passion, a murder could happen, and life imprisonment is probably the best way.
I believe in capital punishment in certain particularly gruesome, premeditated, obviously satanic cases.
For example, there was a woman in a town nearby, a professional butcher in a local factory, who served up her defacto as a meal, to his children. This is the horrendous thing I could ever imagine.
Also for serial abortionists, who according to the law, are not even criminals.