It is even more immoral to do it in anger and loss, and exponentially more immoral to commit passionate "justice" on the basis of passionate anger and loss.
Capital punishment is sometimes judged to be disproportionately harsh because murderers suffer from prison time, from knowing their execution date, and from losing their lives, whereas murder victims only lose their lives.
Q: If execution is unacceptable, what is the alternative? Fromthere has been an average of 5 exonerations per year.
While some states have allowed the death penalty to be used in certain cases, others have outright removed it as a choice. Is it better to execute these criminals or incarcerate them? Critics of retributivism as a general theory of punishment often raise a related objection: it is hard to know how much punishment to assign to a given offense.
Advocates respond that offenders forfeit their right to life by committing murder. Islam's holy books, the Quran and the Hadith, note that capital punishment is appropriate for intentional murder and fasad fil-ardh "spreading mischief in the land".