Was it necessary for everyone to die in the end?

On a recent essay I assigned for my students I asked my sophomores if they believed it was necessary for everyone to die at the end of Shakespeare's Hamlet and why.  It's amazing how many of them said yes with the reason that "they deserved it."  They said that all of the characters who died did a lot of bad things and they needed to pay for it.  Many of them even mentioned the characters' sins.  It made me think about real life and how we all deserve punishment for the bad things we do, and we all do a LOT of bad things.  I, for one, am so thankful and humbled at the fact that I am not going to get what I deserve.  I deserve punishment, guilt, and death, yet I have been made clean through Christ.  He has taken my punishment for me.  I have a God who loves me more than I could ask or imagine and I am so thankful for that!