The near insignificant burden that the upkeep of people on death row causes you is not, to me, a compelling reason for killing.
I think them contributing back to society is a fine idea.
A person in the military gets repreives, furloughs and breaks. A person in the military knows that their tenure will expire and they will walk away if they want to. I don't think you can equate that experience very meaningfully to being on death row. Nor should it be.
And I seem to remember a study done recently that concluded that it costs more to sentence someone to death and execute them than it does to incarcerate them for life. I don't have time to look for it right now, but I will when I get home.
Here's some stuff, I'm still looking for the study I found before, but it may be referred to here...of course, this is an anti-death penalty organization, but the data put forth pretty much speaks for itself.
http://www.deathpenaltyinfo.org/arti...did=108&scid=7