So how does the Sucide Center kill him exactly?

I wonder if the poison would present a problem when they turned the bodies into food...?

'This isn't a smile. It's the lid on a scream.' - Bet Lynch, Coronation Street

" The only better way would be instant disintegration but you need to be standing underneath an atomic bomb. The technology for instant disintegration chambers a la Star Trek does not exist. "

You lack imagination, esoteric knowledge, and humility.

Didn't it ever occur to you that you might not be able to think of ALL the possibilities, that there might be more of them in the Universe?

There used to be a sword in some role-playing game. A sword that doesn't harm the body in any way, but cuts the 'silver cord' that keeps the soul attached to the physical body.

Now, I am not saying that such a sword exists in real life, but the truth behind it is sound.

The esoteric truth is, that once that cord is severed, the soul can't stay in the body much longer and must leave permanently, which is when the body dies and the soul travels/transforms to the astral plane. This is what people call 'death'.

So, putting you to sleep at first, making sure your soul has left the body (the soul usually leaves the body during sleep, the distance varies), then severing that cord would certainly be even more peaceful and 'better'. What would be better than dying in your sleep, so to say? (Not that 'death' really exists except a word that was invented to describe something not many people understood the true nature of. Basically, the BODY dies - but then, it's never REALLY alive anyway - but the self, the soul, doesn't. Energy is never destroyed, it only changes form)

If it's this easy to add another better possibility, then why were you so cocky as to imply that you know ALL the ways, and that there are no better ones? Obviously you were either lying, or too arrogant for your own good.

I have listed ONE better way (which is sufficient to counter your arrogant ignorance/lie), but I am sure there are others.

Besides, humans don't always (or necessarily even often) die at the exact moment that their body is crushed/destroyed/rendered unlivable - they usually leave the body a lot sooner, so they won't experience any pain. Experiencing pain in death would often be needless, and since you are going to "die" anyway, you may as well leave the body a few seconds earlier, so there's absolutely no pain or discomfort in it. This has been known to happen in car accidents and such, where a certain pain would otherwise have been imminent.

They also say that 'death' by drowning is extremely pleasant - from the moment that you 'let go' and start breathing the water (before that, it's probably awful), and people who have drowned before, often wish to die that way again.

Before anyone starts questioning where I can know such things from (that's the burden of living on an underdeveloped planet, having to always explain the very basic, mundane things that everyone should already know and take for granted, like they do that if they open their curtains, light will come into the room - I don't have to explain where I know such things, but I am always expected to explain these other, just as normal and 'everyone's knowledge'-type things), let me point out that there is such a thing as hypnosis, and such a thing as 'regression'.

Also, how do YOU know what exists and what doesn't? How far have you travelled in the Universe? Oh, nowhere beyond a silly, little, wretched planet on the edge of a relatively small galaxy? I see. How many planets, galaxies, solar systems and beings do you think there are in the Universe - especially if we start talking about other dimensions, too?

And yet you think you can just dictate what exists, and what doesn't! Unbelievable. Materialization and dematerialization is as easy for more advanced (though I would consider them 'normal level') beings as walking through a room is for us.

Of course such technology exists - pretty much anything a human being can imagine, exists somewhere as reality! And a lot of stuff that human beings are too limited to imagine.. (Heck, even in this movie, the protagonist couldn't even imagine a few simple sceneries - which reflects my point nicely)

A little update...

I can't remember clearly, but wasn't there a guy from the medicinal crew who shouted to Thorn not to enter the room? And dindn't Thorn cough and gasp for breath after he reachef Sol, as if there were traces of a toxic gas in the room?
I may sound irritating, but - if not carbon monoxide - how about the good old potassium cyanide from the infamous suicide capsules which are mentioned in several movies and documentaries about spies (and Nazis like Goebbels and Hitler). Or a cyanide gas which was used in the US gas cambers up to the year 1999?

The "patient" can drink an heat sensitive sedativum, sleeping mixture and then receives the deadly gas which stops the oxygen metabolism in the body cells.

Remains of the cyanide reacts with the body fluids to harmless substances. And when the dead body is being processed into Soylent Green - including heatening up the human meat, sterilizing it - the sleeping medicine will break up into harmless substances too.