There seems to be three methods to creating a sinless society. Each method is distinct and it is up to each individual to decide which is best.
The World’s Method
The world’s method is to erase sin. If there is no sin, then society is sinless. Everything is alright and nothing is wrong, since all things are relative and no one has the right to say what is wrong for someone else. Guilt is ignored.
Religion’s method is to work to overcome sin. People are burdened to work harder, try more, and give more in atonement for their sins. Guilt is multiplied.
Christ’s method is to cleanse us of our sins. Christ takes responsibility for our sins and pays the price. All guilt is removed.