IS DEATH PENALTY EFFECTIVE IN PREVENTING CRIMES?

It is of no doubt that there are heinous crimes that deserve heinous judgments but it is left to us the non-criminals to show the better part of us. There have been several arguments based on whether death penalty is effective or not, some have even argued that such judgment should not be given to a particular individual and as we all know, life is sacred. Several countries of the world have adopted death penalty in order to reduce, prevent or stop crimes in their country. Should we say that such judgment is inhuman or should we say that it is absolutely right for a man to end the life of another? I do not support the fact that Death penalty is effective in preventing crime due to destroy of humanity and increase in Crime intelligence.
Death penalty is not effective in preventing crimes because it only helps to destroy humanity. As we know that the human nature requires every human to live in peace and oneness, convicting an individual to a death penalty will only make the other criminals out there to be hardened and lose their human nature, they believe that after all if caught, they will surely die. The human nature is also hindered because these set of people are not given chances to change. Every human at one point in time is bound to change either through someone or self, but if this person has been executed all in the name of justice, what change could he achieve then?
Another important reason to show that death penalty is not effective in preventing crimes is that of increase in Crime Intelligence. It is in every man to want to find an escape route, so also for these sets of so-called criminals whatever there offences. Many of these become more learned in this act of crime and no-matter how much the government tries, they rarely catch them. It is because they know that once caught, it is farewell to this beloved world. Some even find a way to that crime in a bigger way so that they can make their money quick, why? It is all because of death penalty that is attributed to such a crime.
In conclusion, we know that all the countries of the world cannot make the same decision, it depends on the country and the level of such crime in that country that makes the law of death penalty propounded and agreed upon. It has not been effective so far in reducing or stopping the level of crimes in many countries of the world that it is being carried out which makes me strongly oppose the fact that death penalty is effective in reducing crimes due to destroying of humanity and increase in crime intelligence.