Do We Really Need Resurrection and the Day of Judgment?

Each and every human being desires justice. Even if he does not want justice for others, he wants justice for himself. Every person who has suffered injustice, almost certainly wants the perpetrator of injustice to be punished. Every normal person would like the robber or the rapist to be taught a lesson. Can we have perfect justice through punishments in this world?
Hitler killed many Jews during his reign of terror. Even if the police had arrested him, what punishment can the human law give Hitler? The most they can do is to send Hitler to the gas chamber. But that will only be punishment for the killing of one Jew. What about the punishment for killing the other Jews?

We have even heard of judges writing multiple life imprisonments which can go up to 100 years for the convicted criminals. This is because the criminal deserves so many years of punishment. Will the convict complete his term of punishment if it is 100 years?

True and perfect justice would mean that the victims are also taken care of. What compensation can we give to those innocent people who were killed by people like Hitler? We will not be able to compensate them because they are already dead. Several righteous people have been tortured and some even killed. Don’t you think those righteous people should be rewarded for their righteousness?

Rational thinking will lead us to conclude that there is definitely a need for an eternal life after death to compensate people for what they did in this world. God who is most just will not let people go without being rewarded or punished for what they did.

Since the life in Paradise and Hell is eternal and never ending, God can punish Hitler six million times or even more in the hellfire. Similarly, God can reward and compensate the righteous and the innocent people who were killed, by giving them as much as He wants.