Pretty much all the dominating religions portray a bleak outlook of life, a life without purpose, including Christianity. It does not end with death but it should also not end with the afterlife. The idea of permanently staying in an otherworldly paradise, doing nothing but singing songs and having a good time, defies all occurrences in Nature. Everyone does something to get something. Work, the driving force always has been work. Some might bring up the passages about this world being in a fallen, imperfect state and that before the fall of man, this earth reflected heaven. These people must explain how the movement of the planets were affected by this, because from what I can tell, the planets still revolve around the sun in a rather orderly manner, giving no indication of evil or "sin". The passages only say that satan rules over this earth, it says nothing of other worlds, which are still under god's dominion. If this law of harmony prevails in outer space (which has been said to be fit as a dwelling place for god and god is certainly not imperfect), then why shouldn't it apply to the heavenly paradise? It follows that even in heaven, there will be much work to do. It won't merely be a life of indolence, which would actually be defying the "will of god".