As humans, we are capable of higher thought, of being aware of our instincts and superceding them using our thoughts, with which we develop models of what we believe reality to be. This is why people can willingly choose suicide, and circumvent nature's mechanism to sustain and prolong life. If someone is indoctrinated to the point that they truly believe that as soon as they strap a bomb to themselves and blow up a bunch of infidels, they'll go to heaven and get to have sex with 72 virgins or whatever their idea is, they can circumvent the body's will to live. Their true belief has become that they will continue on in an infinitely better incarnation if they do this thing. Similarly, if someone is so chronically depressed that life is unbearable, they may decide that nonexistence is better. An animal lacking higher thought capability is unable to arrive at such a conclusion because although they may feel great pain, they are unable to override their survival instincts.
I'm talking about what the body does, not what the mind thinks. They might have been scared but they weren't actually experiencing the death state in their bodies until the planes crashed into the buildings and obliterated them in a split second. If suicide attacks involved more than a moment of extreme fatal level bodily pain, we probably wouldn't have suicide attacks. People's bodies would stop them.
Life isn't just pain, but pain is a big part of life. Which part of post #10 wasn't clear? I'd be happy to clarify.
No it's totally ok, there's a lot of reasons it would just take a lot of time to type it out.
Dosage, response, tolerance, potential side effects and bizarre reactions make opiates undesirable for fatal overdose IMO. Unless you somehow had access to insanely potent/pure fentanyl series compounds without any appreciable aforementioned compound exposure/tolerance.
I don't think your post was out of lines, but my thinking on this matter is pretty much this.