Like most of us. I agree that the death penalty is an appalling thing that does not belong in a civilised society, nor anywhere, actually. It is not a preventative measure: there are as many, if not more murders where it still exists, and juries can be afraid to convict it the death penalty is there.
But I do agree that sometimes life should be life - 'at her Majesty's pleasure' is the expression used, I believe. Of course, for most prisoners, there has to be some remission of sentence for good behaviour, or prisons would be ungovernable. But this should be around 10 to 20%, not half the sentence.
That creature who murdered Tia should not be out until he is an old man, IF he survives that long.