I personally think the line should be drawn at 'no death penalty whatsoever'. However incurable someone might seem, putting him to death will certainly take any chance at repentance from him. I'm not even religious and yet I think that is wrong from a completely human point of view. We can never know whether someone will not come to regret his ways in the future unless we can prove that he is physically or psychologically unable to change his views. In that case, though, it becomes a medical problem and the question arises on whether someone is fully responsible for his actions if they are dictated by a clinical condition (which is quite rare, actually).
Also, I don't think the relatives will feel better just because a murderer was executed. Seeing another person suffer or die will do nothing to alleviate their loss. In the end, revenge will do nothing to make you feel better, because it will not give you back anything.
As for someone commiting genocide, here we leave law and enter politics, because that usually involves someone in a high government position. You can't really commit genocide without a government behind you that organizes these things, otherwise you are just a serial killer that targets a specific subgroup. If that person is a member of your own government, that usually involves a forceful removal of that government. I don't think killing off your predecessors is a good start for a new government, but it has been a popular solution for that problem in the past.
However, since I happen to know who wolfeyedangel is talking about, we get into the topic on whether war is the correct solution for one country to enforce its interests in another country here, which is not what this topic is about, so I'll refrain from commenting on it.
Out of interest, I did some research on which countries even have death penalty. Interestingly, all of Europe with the single exception of Belarus, doesn't have death penalty. Russia doesn't execute people, neither do Turkey and Israel (those two surprised me). Most of South America has gotten rid of it. Australia and Kanada have both abolished executions quite long ago.
So what's left is mainly China, Japan, India, about half of Africa (the other half mostly still has death penalty in theory but doesn't use it in practice), the Arabian countries and most of Asia. Add to that many of the various Caribbean islands. And the US, of course.
TxCat, as an example: Germany doesn't have death penalty, ever since 1949 (more or less when the country started to get its act together again after WWII). Currently we have roughly 80 million citizens and we had between 800 and 1000 murders a year for the last ten years. That's actual murders, if you include other crimes that lead to the death of someone, it's about three to four times that. That's between 1.0 and 1.25 murders per 100.000 inhabitants, compared to about 5.0 to 5.7 in the US in the last ten years, if my sources are to be believed.
The only possible penalty for murder here is a lifelong prison sentence, which means a minimum of 15 years served and the very real possibility for keeping the convict imprisoned for the actual rest of his life afterwards.












































