My feelings on the death penalty are very mixed...but I have read a few things that have guided my opinions..
One was an essay written by a woman whose daughter had been murdered. (I'm looking for it to post) She read it in court before the jury ruled between life in prison and the death penalty.
It basically, was nothing more than a list. A list of all of the things this man would have been able to do if he was sentenced to life in prison that her daughter would never be able to do again. Further her education, date, watch television, take naps, look at the sky, dream...
I agree with those who say that life in prison is a pretty hellish punishment...but I'm not sure if the death penalty should be as much about that punishment so much as saying, "You - in a horrible and calculated way - took everything that a person has from them. In addition, you probably ruined or at the very least, changed irrevocably for the worst, several or many other people's lives as they now have to go on without that person. For this reason, you do not get to live anymore. No more tv, no more food, no more getting your GED or Master's Degree, no more meeting some psychotic woman online who willing to 'date you,' no more of anything that goes along with living. You lost that privilege."
Its a complicated issue...but I do think that some crimes are so horrible...that the person who committed them should not be allowed to enjoy any of the benefits that come with being alive...no matter how small.