Dark with light at the end of the tunnel. Things like Lord of the Rings. As Samwise Gamgee put it... "It's like in the great stories, Mr. Frodo... the ones that really mattered. Full of darkness and danger, they were, and sometimes you didn't want to know the end because how could the end be happy? (...) Those were the stories that stayed with you... that meant something, even if you were too small to understand why. (...) Folk in those stories had lots of chances of turning back, only they didn't. They kept going... because they were holding on to something!"