usually the people take it to prevent worse and to prevent the death of family members
It's also easy to judge, from behind a screen. It's no coincidence they ALL 'just sit there and take it'. Even when they do a sawing choppy kind of amputation.
I've seen a documentary where the Saudi executor explains; He says they all become very quiet right before the moment. Like people made their peace with what's about to happen, seeing it to be inevitable, or scared shitless.