I Just Don't Know

I didn't want to wake up. I was having a much better time asleep. And that's really sad. It was almost like a reverse nightmare, like when you wake up from a nightmare you're so relieved. I woke up into a nightmare.
~ Ned Vizzini, It's Kind of a Funny Story 

The so-called ‘psychotically depressed’ person who tries to kill herself doesn’t do so out of quote ‘hopelessness’ or any abstract conviction that life’s assets and debits do not square. And surely not because death seems suddenly appealing. The person in whom Its invisible agony reaches a certain unendurable level will kill herself the same way a trapped person will eventually jump from the window of a burning high-rise. Make no mistake about people who leap from burning windows. Their terror of falling from a great height is still just as great as it would be for you or me standing speculatively at the same window just checking out the view; i.e. the fear of falling remains a constant. The variable here is the other terror, the fire’s flames: when the flames get close enough, falling to death becomes the slightly less terrible of two terrors. It’s not desiring the fall; it’s terror of the flames. And yet nobody down on the sidewalk, looking up and yelling ‘Don’t!’ and ‘Hang on!’, can understand the jump. Not really. You’d have to have personally been trapped and felt flames to really understand a terror way beyond falling.”
~ David Foster Wallace 

“Did you really want to die?"
"No one commits suicide because they want to die."
"Then why do they do it?"
"Because they want to stop the pain.”
~ Tiffanie DeBartolo, How to Kill a Rock Star

Killing oneself is, anyway, a misnomer. We don't kill ourselves. We are simply defeated by the long, hard struggle to stay alive. When somebody dies after a long illness, people are apt to say, with a note of approval, "He fought so hard." And they are inclined to think, about a suicide, that no fight was involved, that somebody simply gave up. This is quite wrong.
~ Sally Brampton, Shoot the Damn Dog: A Memoir of Depression

I am constantly torn between killing myself and killing everyone around me.
~ David Levithan, Will Grayson, Will Grayson

Résumé
Razors pain you,
Rivers are damp,
Acids stain you,
And drugs cause cramp.
Guns aren't lawful,
Nooses give,
Gas smells awful.
You might as well live.”
~ Dorothy Parker, Enough Rope
 
If I had no sense of humor, I would long ago have committed suicide.
~ Mahatma Gandhi