Well, I went back and read a lot of this thread and it caught my attention a bit. I generally don't like to get involved in debates about this type of subject but i'm gonna throw my 2 cents in even though i'm sure some will tell me i'm way out in left field. I'm not at all opposed to the death penalty, first of all, I do believe the "punishment should fit the crime" as they say. I understand that the legal system isn't fool proof but I'd like to see some official stats as to how many people actually have been executed who were later found, without any reasonable doubt, to be INNOCENT. Remember, when a trial takes place, all it takes from a defense attorney is reasonable doubt to get even 1 juror to doubt the defendants guilt, which usually leads to a hung jury and a mistrial or the foreman keeps the jury together till they come to an amicable conclusion (i.e half think the person is guilty of 1st degree murder, a few think it wasn't pre-meditated, and some think it's merely manslaughter, so compromise on 2nd degree murder and it's a done deal). If not enough reasonable doubt can be presented during a trial to sway even ONE juror, how do you expect there to be enough 20 years later?
As far as what's humane and what isn't? Again, the punishment should fit the crime. You read these stories about people who not just kill but torture their victims (remember the BTK killer for example?), and worse yet, those who rape, torture, and then kill innocent children? Execute that monster the same way he/she tortured his/her victims.