Desperation..you know not of which you speak

Watching "Into the Wild" and, again, I'm struck with the feelings of desperation through which I've endured on multiple occasions. I think few can truly grasp the depth of feelings associated with the word. Oh sure, maybe you've been sick a few days, had surgery, a car breakdown, yeah, those are but minor fractions, tiny slivers of the meaning. So you understand it, a bit.
I comprehend the word to it's depths, it's breadth, to it's very ravenous core.
Desperation is a complete and total reliance upon oneself, one' own body and mind...and being unable to move, even a single inch, out of the way of a screaming freight train, a devouring fire, the consuming mouth of hunger and thirst. It's being tied down in a desert  amongst unrelenting heat. It's screaming in pain with no one to hear.
It's about laying down and not knowing if you will ever be able to get up again, to eat, to drink, to walk.
It's about not knowing if you'll find the courage to take another breath.
It's about rapid, shallow breathing as a gun is held at your temple, another person's finger on the trigger, not knowing if, within the next second, you will feel pain, death, heaven...or hear laughter at the fear they elicited upon you.
Desperation is being hungry, God, it's about being so hungry an entire day, and then the next day, and payday is a week away.
It's about blacking out on the floor, struggling to call out and no one answers. You either find the will to crawl or you lay there and wait for chance.
Desperation is being chained, roped in, helplessness, being unable to escape and you can feel the knife at your throat or the hand below your waist.
It's about being pinned down; the ability to move, to react, to save yourself having been taken away.
It's when there is no one outside willing to help, even if they are standing directly in front of you, intentionally inflicting pain and daring you to scream so they can slap you again. That, my friend, is desperation.
Being trapped with someone, door locked, windows shut, tied to the bed and being tormented.
Don't you fucking tell me you understand the word unless you truly do.
There's so much more to this. There really is. Maybe this exposes the tip of the iceberg.