Like zippy said, there's really no way to tell what happens when you die. People's hearts stop and they can be considered dead, but they may "come back alive." This doesn't mean they actually remember what happens when they are "dead," nor does it mean they have special dreams about Heaven or Hell or whatever they believe in. What happens when you die really comes down to what you believe in, whether it's religion or personal beliefs. Most people convince themselves of something nice that happens when you die, just to live happily in belief there will be a good afterlife. There's no wrong to this, however (and, after all, I am one of those people). No belief in what will happen is any more true than the other because we have no proof. It all comes down to what you believe.