Pretend the Devil exists. He appears to you and gives you a choice: live another 100 years perfectly healthy but miserable the entire time, or die in 10 years but every moment of that time will be both the greatest moment of your life up until that point and greater than the moment that preceded it. Which do you choose?
Note: the Devil is not interested in your soul. There are no afterlife implications whatsoever. If you refuse to choose he will choose for you.