This idea can have logic and great value even for an atheist.
Not that long ago I offered for some angry people to kick my head in, to prove a point about how men should treat women (i.e. don't bully them). (I guess they didn't have the heart to do it.)
Among the many interpretations which can be placed on the Crucifixion and Resurrection of Jesus, we can say this:
Jesus went to his death willingly - in that he knew it was going to happen, and didn't run away, when he could have done - in order to prove and illustrate a point. That point was his life's work (well, the last 3 years'). One of his main lessons was that we can all be given the chance for our sins to be forgiven, provided we earn it and do the necessary real work involved. Provided we go to our Crucifixion willingly. If he can get himself crucified, we should be up to saying sorry and putting things right when we have to. We should be humble enough to suffer for what we have done. We should be humble enough to let something go instead of escalating to some kind of blood feud.
He also forgave the people who were crucifying him.
By dramatically illustrating the idea that God can forgive our sins, will always give us a second chance to make good: life became possible, life became good, life became fruitful. Instead of nasty, brutish and short. Hence the Resurrection.