Religion is for those who feel a need for justice. I mean how self righeous would you be if you "knew" that when all was said and done the evil would be punished, and the good would be rewarded? answer: Very. Wouldn't that give you some sort of reason to continue to do what you are doing? As opposed to the somewhat irrational I will be a good person because I feel like it with absolutely nothing backing it up at all.
There is no justice in this world and for those who were born with a strong sense of it, you have my pity.