Pro's and con's of death penalty:

.) Death Penalty is more deterrent than any other sentence:
Since today, there's no confirmation for this opinion. Death Penalty could only be a deterrent, if a crime is planned beforehand. This is the only point where you can imagine that the offender could think about the consequences. But most of the killings happen ill - considered, under emotional disorder and not rarely under the influence of alcohol or drugs. In few of the affairs, where the offender plans the killing, it is more scaring to be caught than the sentence.