[mike4bmp]

Why does society punish its criminals? Why does a mother/father spank their child when they do something wrong? Why is there karma? You reap what you sow....Cartesian principle of action/reaction...just on a grander scale in this case. Everything has a polar opposite.....barring Subjectivistic views of course....you can call it God, Karma, Tao or whatever you want but everything has a balance.
Evil in general is destructive...from a Western point of view anyways....So the source of evil will always be diminished in the end to bring back balance. You have a serial killer who pleads guilty...you execute them...no more killing done by that person...simply the natural laws of retribution.
I do not subscribe to the notion that God lets anyone burn in hell that does not believe in him/her...but I do feel that everyone will be judged according to how they have conducted themselves....and there will probably be a lot more religious people burning in hell then atheist or agnostic...in particular Evangelical/Fundamentalist Christians and fanatical Muslims....IMO...