It is fast and reliable, if a bit messy. It works the same on everyone.
The old method of cutting off the head with a short knife is still working in varous islamic lands, and the old method of a rifle bullet in the back of the head still works in various communist and emerging former communist states, and can be done by rank amateurs with no training at all.
I've always wondered that myself. I read somewhere that the government pays over $1,000 on the drugs used to kill one person, which strikes me as being ridiculous.
no, I like the horrible pain Idea better.