Question

Why do so many people seek retribution for crimes, in general, and capital crimes, in particular?

Answer 1

Some crimes are so heinous and inherently wrong that they demand strict penalties – up to and including life sentences or even death. Most Americans recognize this principle as just...

Studies of the death penalty have reached various conclusions about its effectiveness in deterring crime. But... the majority of studies that track effects over many years and across states or counties find a deterrent effect.

Indeed, other recent investigations, using a variety of samples and statistical methods, consistently demonstrate a strong link between executions and reduced murder rates... In short, capital punishment does, in fact, save lives."

Society has always used punishment to discourage would-be criminals from unlawful action.
Since society has the highest interest in preventing murder, it should use the strongest
punishment available to deter murder, and that is the death penalty. If murderers are sentenced to
death and executed, potential murderers will think twice before killing for fear of losing their
own life.