The problem with immolation.

[Irulan]

Is the high survival rate. There's potentially decades worth of suffering with only like a 70% mortality rate. Also they scream and curl into the fetal position as they die. So probably not actually painless.

I am going to say for certainty. Driving factors are practice. Desensitization. Speed. Reletivly painless to initiate, so quick, and irreversible.

Explosives and extremely quick and lethal toxins. Toxins are easy to fuck up and actually hard to source.

Falling impacts still have like a 7% survival rate that leaves the person basically a paraplegic.

My biggest issues are violent trauma being tasteless and potentially survivable, so no morr wing suiting, death by cop, or daredevil bullshit for me.

Starvation is actually practice-able and potentially low pain, dehydration can get ya to. And hypothermia. Brain really does shut down quickly once deprived of needed resources. 50/50 myself on how long the suffering actually lasts, but they seem apparently natural and peaceful endings. Very arguably "natural causes" here too. As it's basically just exercising free will to choose without being deliberately destructive or violent to the vessel.

There's always finding nice hot viscous lava flow and overcoming the initial self preservation instinct. A few thousand degrees should be 100% effective and relatively quick. Also no cleanup necessary. And no one can really fuck with remains. Also a big +. Shouldn't be to much trouble to get to a volcano if determined.

Just random thoughts and theory.