The purpose of the justice system is not to respect your arbitrary wishes.
Certainly not, but it is the collective opinions of individuals in a society that form its government and thus, by definition, its system of justice.
The question is, why do you wish that, and why you're not satisfied with life sentence and demand death.
Now that simply isn't true. I stated my reasons a number of times throughout my post:
- 1) such that there is no chance of them interacting with anyone ever again
- 2) nor do I wish to dump resources into attempting to fix somebody who's so broken
- 3) I merely want them removed so they're gone forever and nobody has to deal with them
- 4) a desire to have them permanently removed from society in the hope that the rest of us civil beings can live normal, happy lives without them
I thought I was quite clear on the issue of why.
The only rationale that you gave so far is not willing to "dump resources" on those people. The oft-quoted statistics is that it costs more to execute someone than to keep them in prison for the rest of their life, due to the complicated and lengthy appeals process associated with death penalty. You could say that we should just get rid of the process, but that will only increase the number of people who are executed wrongly (even with the current costly process, we still get it wrong often enough to be noticeable).
The existing system has a number of flaws which should be corrected with evidence-based reforms. We should not be treating people from different communities, races, families, or means any differently from one another. Rules of evidence should be reviewed in depth periodically (following an initial overhaul) to ensure they're based on the latest scientific understanding of what is and isn't an effective means to establish truth. The same should happen for investigative measures to ensure that fewer innocent people ever make it to a trial. Prisons should be completely reformed to rehabilitate effectively where possible and confine safely for execution where it is not possible. And all proceedings involved in executions should be overhauled and periodically reviewed to ensure that every possible effort is being made to ensure there is no chance of executing an innocent person.
That said, once the system itself is operating fairly, efficiently, and effectively to a certain degree, the delays associated with the high cost of modern execution sentences will have been reformed out of the system and the costs will decrease. Those costs may continue to be higher than keeping the individual in prison for life, but that seems a rather pointless endeavor to begin with. If the individual is such a threat that they can never be released, what is the point of having that individual alive at all? Seems as though you're merely reducing the threat they pose and forcing them on prison guards who are, themselves, law-abiding citizens who deserve protection from such threats. As such, establish guilt and execute. Threat is reduced to zero.
So in practice, the resource cost of keeping those people imprisoned is not for the sake of them if they're truly guilty; it's for the sake of giving a chance to someone who is actually innocent. So, how many innocents are you willing to sacrifice?
That's an unfair question. Let's take your question to the logical conclusion and state that we should simply release everyone in prison today, abolish the justice system, and abolish the police to ensure no innocent person is ever arrested, tried, convicted, imprisoned, etc. How many innocent people are we willing to confine in a cell for decades at a time?
We cannot have a perfect justice system, but we can certainly have one that's a lot better than what we have today. We should be constantly reforming and reviewing it from top to bottom, fixing perverse incentives, taking lessons from groups like the Innocence Project and applying them across the board, taking lessons from prisons that actually have success rehabilitating people, fixing our nearly non-existent mental health care system, and any number of other efforts to avoid causing harm to our own people. At the same time, we ought to recognize that some people are inherently broken. They are wired in such a way that they will always be a threat. Unless and until medical science improves to the point where we can identify and fix people like that medically, we should protect all members of our society from those individuals by simply removing them from our society.
If ending execution is that important, find a solution whereby such individuals can be safely removed from society in a way that no one who isn't like them will ever have to interact with them again and so that the threat they may pose to good and decent people is reduced to zero. Execution accomplishes those goals, but you don't like it. That's alright - the execution itself is merely an effective means to an end - just find some other means that's just as effective.