My god no. The fact that so many people are saying they would (though I doubt they actually could) is kind of sick
could? what makes you doubt that human beings are capable of killing one another? because that is simply being willfully ignorant
not sure that I'd do it for $5,000 though, depending on the crime I would even do it for free(child/animal abuse are the two things that would probably push me that far, people who abuse kids deserve to be bludgeoned with a bat) but in this case I'm not sure, I would have to spend some time thinking about it