Nowaday in Spain the death penalty doesn't exist. I think that if a country uses the death penalty they have to be very sure that they have all the evidence and know that the person is guilty. If they make a mistake and execute someone, they cannot change the result. There have been examples where after years of being in prison someone has been found to be innocent.
On the other hand, for example, if in the future I have a child and someone hurts, violates or kills my child I would want yhem to suffer the same. In the bible it says: " An eye for and eye, a tooth for a tooth". If someone kills another person, that person should also be killed.
The death penalty only exists now in some states of America and in some Asian countries. I believe in revenge but I still have to think that if they make a mistake, then someone innocent dies.
In conclusion I think that the death penalty in our country, Spain, should exist because there are more cases of violent crimes, murders, sexual violations... that with the death penalty, maybe, there wouldn't be so many cases like these. However, I also think that when applying the feath penalty we must be sure that the person convicted is the correct one because this person could die accused of a thing that he it had nothing to do with! Here we have a big problem, the worst problem about having or not having the death penalty.