In all ancient societies some form of the death penalty was used as a form of punishment for crimes. Now, it's one of the biggest issues in courts. Capital Punishment should be used to help tax payers and keep criminals from killing again.
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. .
For years, criminologists analyzed murder rates to see if they fluctuated with the likelihood of convicted murderers being executed, but the results were inconclusive. Then in 1973 Isaac Ehrlich employed a new kind of analysis which produced results showing that for every inmate who was executed, 7 lives were spared because others were deterred from committing murder. Similar results have been produced by disciples of Ehrlich in follow-up studies.
People in support of capital punishment say that if it were carried out as it was intended then it would prove to stop crime as it was intended, but instead not many people are executed so it is not a good deterrent to crime (Capital 2001). Criminals would then think twice before committing murder if they thought that there own life was at stake. If the criminals were executed the first time convicted of murder they would never get the chance to get out of jail and kill again. .
In cases when there is a highly publicized death penalty case according to research homicide rates go down but after the case is over the rates go back up. .
Many people think the death penalty as an "eye for an eye" principle. To family members of victims it may be the only way to satisfy them. People feel that the criminals brought it on themselves so they get what they deserve.