I'm with Storm on this one.
Everyone has a right to life. Life in society is a priviledge. No one really wants any of the people on death row, or even many of those just in prison, who are actually guilty to be out in society. I think we can all agree on that.
The problem then becomes whether or not they have the right to be financially supported by the rest of us in society. I'm not sure that they do. I don't really want to pay for the living expenses of someone just because he/she killed some people. If that person can be rehabilitated, then I'm all for doing what it takes to accomplish tha. But, as has been said, some of these people are beyond rehabilitation. If there's no hope of rehabilitating them so that they can be a productive member of society, then either throw them out somewhere, as Britain did in the past to Australia, or execute them. The point being that if they want to separate themselves to a place where they have no chance to harm other members of society, they are more than welcome to do that. If they are not willing to do that, then they need to conform to our standards, or we should do it for them.
In theory, I tend to agree with the death penalty. In practice, I know it has its problems because it is a human function. Life is not fair, one way or the other. I think as long as it's done as correctly as we possibly can, it is useful. I say that knowing that it leaves open the possibility of me being executed for something I didn't do, as some others I'm sure have been. I just think it's worth it, unless we can find another way to do an Australia thing.