Regardless of whether it's a deterrent, there have been people sentenced to life imprisonment in the UK who were later shown not to have committed the murders t

Regardless of whether it's a deterrent, there have been people sentenced to life imprisonment in the UK who were later shown not to have committed the murders they were sentenced for. Those people would have been hanged if we'd kept the death penalty. I presume there are also miscarriages of justice in the USA.