Humane, in these types of circumstances, are not just for the victim, but for the witnesses and executioners as well.
The internet legend that created the suicide helmet is likely the way I’d want to go given the choice. But it would not be a pleasant thing to witness.
FTR: I’m fully against the death penalty. It is a barbaric practise. But I still feel that those who participate in this horrible exercise shouldn’t be traumatized either.