As for the moral high ground, a murderer kills indiscriminately or sometimes in a well thought out plan. But he still kills, murders, takes a life on his whims. As for government, a murderer is brought before the court, he is offered a trial, something his victims didn't have. He will be found guilty or innocent by a jury of his peers, something his victims didn't have and a judge will sentence him. A judge is something his victims didn't have unless you could the murderer as judge, jury and executioner all rolled up in one little package. That is the moral high ground.
As for feeling the wrath of the people he hurt, the murderer probably deserves it ten fold. But as you state, we are humane to the murderer even if the states takes his life. There have been times I think we worry more about the murderer than his victims, feel more pity for the murderer than his victims. One thing is for certain, we provide the murderer ten times, probably closer to a hundred times the rights and privileges than the murderer gave his victim.
Respect, that is something we should give the victims, not the murderer.
Early voting in Georgia. On the 20th of October this old Goldwater conservative voted against both Donald Trump and Hillary Clinton by casting my vote for Gary Johnson. Neither Trump or Clinton belong within a million miles of the Oval Office.