In the UK Ian Brady the Moors Murderer a Bestial Man, he petitioned the Courts to allow him to commit suicide, rather than serve the rest of his Life sentence.

As a deterent the Death Penalty does not work.

As retributive Justice the Death Penalty does not work for me, it is insufficient(you could add a bit of torture like waterboarding before you terminate) that would be better!

A life sentence is far more Draconian hence the plea to die made by Brady, and that is why I am anti-capital punishment, or one of the reasons I should say. We do not have it here!