You've pretty much summed all my thoughts up there Emma! How is it that those in power suddenly have the magical ability to decide who deserves to be killed? How can anyone ever hold such authority?
Many throughout history have at the time had the authority to decide who deserves to be killed, only for them to eventually lose their power and the deaths be ruled as illegal. The law should reflect morality, not give us morals - and if our morals dictate that killing is wrong, the law should reflect that, not support the legal killing of anyone.
Of course some may feel that criminals are deserving of death so it is different, but I don't feel that anyone is ever deserving of death, regardless of their crime.
I can see your point, and in most cases I agree. The death penalty isn't something to be taken lightly, but monsters IMO, aren't people anymore, but rabid animals. When there is, without a doubt proof, that someone has raped, murdered, molested others... I just, I don't find that behavior to be human, because humans have some basic moral compass.
Sometimes people do things which are so abhorrent it is disturbing to relate to them as human beings, I do recognise that. I have read stories of people that make my blood run cold, I am as disgusted as the next person when I read about a murder, a rape or a violent crime, but still I don't feel that by sentencing them to death it serves as beneficial to anyone at all. I feel it is detrimental to society as a whole to use capital punishment. I feel it's a slippery slope, and when there are conditions on our right to exist on this earth, imposed by man himself, I question where it could end. We become desensitised easily. When you deem it acceptable to kill one, tomorrow it may be someone else.
For me, there are fundamental rights which should not be conditioned, because by protecting the right for a monster to live, it makes the right to life for law abiding people untouchable.