less humane really? I didn't know. Firing squad sounds violent. I want the execution to be respectful as much as possible. Perhaps let the criminal have a choice.
Unfortunately with lethal injection, it cannot be administered by a medical professional because it violates the hippocratic oath. So it's administered by someone with little to no training who can easily botch it. Recipients are put into a state where they can feel what is happening to them, but unable to express being in pain, which makes it psychologically easier for others in the room, but not the person receiving it. There are numerous sources out there (I'll try to see if I can link them later when I'm not on my phone) that go into how painful the process is and how much the recipient suffers while they are still alive.
