Reply To: Megillah 6b – contending with the wicked

The gemora Berochos 7:1 says that a צדיק גמור a pious person with no sins will be fully rewarded this world and next world, whereas a רשע גמור a wicked person with nothing good will be punished in this world and next world. It you only see the reward and punishment in this world than you might forget about the next world to come. The Ramban in Parshas Acharei says that it matters what your intentions are in doing mitzvos. If you do it for this world’s reward, so will you be rewarded in this world and if you do it for next world’s reward,you will be rewarded in the next world.