We have to pay for this monster to live for the rest of his life. We *all* pay taxes for that. It's expensive. Tell me how that doesn't affect us. A death-row inmate costs, what, $50-75-100K/yr to house and feed? We get no value from this. This is akin to toxic waste disposal. How many doctors, teachers, scientists can we hire for the amount of money we pay to house these people? How much further would we be as a society if we spent the money on getting ahead, not waste disposal?
I'm sure I will get an argument that "All the appeals that death row inmates use before being put to death cost more than just imprisoning them for life!" Maybe if we cleaned up our unnecessarily exhaustive legal process that has basically become a job program this wouldn't be an issue.