I love this exchange between two characters in a short story called "Unreasonable" by Rivka Galchen:

"You're not afraid?

Of the sea?

I was thinking of the world, just generally.

He says that is nonsense. He says he's a happy, enraged, and curious person, but not a fearful one. He says that even if he dies tomorrow he will feel he's had more than is reasonable to ask for. That's why he has nothing to fear. He could have died in infancy. He could have been born a bee, lived only a year. The world could have not existed at all. If you asked him the question, as a scientist, Is it more likely that existence is possible or impossible, more likely that there is something versus there being nothing, he would answer that nothing is far, far more likely, asymptotically approaching total certainty. He would add that it would be radically unreasonable to come to any other conclusion. And yet it would be the wrong conclusion. Anyhow, that is his idea for now."