Somebody else does something wrong so it makes it right for us?
You're not thinking about it the right way. Executing someone is not
the same as murdering them for the simple reason that it is inflicted on a criminal after a trial rather than on an innocent person with no warning at all. Saying execution and murder are the same is like saying theft and taxation, or murder and killing in self-defense, are the same. They obviously are not.
If you were a person who is against the death penalty because it is cruel and inhumane, you would probably sentence him to lifetime in prison since it's supposedly less cruel and inhumane.
But think about it, what would life be like spending the rest of your life in prison?
In my opinion, killing someone is worse to them than sentencing them to life imprisonment. If you're in jail for life, at least there is the slight possibility that there will be an amnesty, or you will escape and flee to another country where you are safe, or a flying saucer full of beautiful alien princesses will come down and rescue you- but once you're dead, you're dead, and none of that is possible anymore.
However, I can easily see why religious people would see this in a very different light.
Personally I think we should make more publicly viewable death penalties.
First off, because gladiator battles are pretty fricken cool.
Secondly, the punishment system seems to be very secluded currently, and creating a public establishment of punishment means that there would be a drop in the allegations of torture and belittlement of prisoners in small unheard of prisons across the globe.
Thirdly, having it publicly viewable might deter some people from committing crimes, because they have seen what other people have done to those who do.
This actually makes a lot of sense.
Capital Punishment is for retribution to society, there is no benefits from it.
Yes there is. You get to make sure they NEVER get to harm anybody again. You also save whatever you would have paid to support them in jail (although as stated before this does not yet make the death penalty economical).
i believe in forgiveness anyone should get another chance.
Another chance to kill people? Face it, some criminals are too dangerous to be given another chance.