Well, I just think of how it is basically the same as before we were born. We didn't know we didn't exist, much as when we die, we won't know that we are dead. We will just cease to exist. Even if there was a heaven, I think I would rather chose the other option. Hell seems slightly more pleasing than sitting through an eternal sermon.
Take the risk of thinking for yourself, much more happiness, truth, beauty, and wisdom will come to you that way - Christopher Hitchens