Do you believe that if someone murder a person that you love should be punish ? Well, that's the whole point. You're not going to get away with murder in this world. A good judge will punish you, and send you to prison.
With God, it's a different issue. When Jesus died on the cross, it's like He paid your bail. So you don't have to be punish. But, you have to repent, and put your trust in Him.
When Jesus was crucified, He prayed to the Father to forgive those who were put Him on the cross. It's because He teaches us to pray for our enemy and love our enemy. Ultimately, it's up to God to judge the person heart.
There are three words translated 'hell' in the scripture
Gehenna (greek) the place of punishment (Matt. 5:22,29,10:28 and James 3:6)
Hades (greek) The abode of the dead (Matt. 11 :23, 16:18, Luke 16:23, Acts 2:27)
Sheol (hebrew) The grave (Psalm 9:17, 16:10)
There are those who accept that hell is a place of punishment, but believe that punishment to be annihilated-to cease conscious existance. They can't conceive that the punishment of the wicked will be conscious and eternal. If they were correct, then man like Adolph Hittler, who was responsible for death of millions, is being 'punished' merrely with eternal sleep. His fate was simply to return to the non-existance state he was before he was born, where he doesn't even know that he is being punished.
However the scripture paints a different story, the rich man who found himself in hell was conscious. (Luke 16:19-31) He was able to feel pain, thirst, and experience torment. He wasn't asleep in the grave, he was in the place of 'torment'.
If hell is a place of knowing nothing or reference to the grave into which we go at death, then Jesus' statement about hell wouldn't be make sense. He said that if your hand, foot or eyes causes you to sin, it would be better to remove it than to go into hell, into the fire that never quenched, where their worm dies not.. (MArk 9:43-48)
Revelation 14:10-11 tells us the final, eternal destiny of the sinner, "He shall tormented with fire and birmstone.. the smoke of their torment ascended up for ever and ever, and they have no rest day or night."