It's unilaterally true that it costs more to maintain the death penalty than the alternatives to it, and we can leverage more resources to victims families. We can do all sorts of creative ways of healing the pain that people have done by channeling the energy and resources to other more redemptive forms of justice.
We're remembering both the good and the bad in our history together in this world. This isn't an attempt to make people feel bad every morning and to force them to go stick their fingers in a wall socket. We chose these things we included as a way to point people toward the possibility of transformation even while remembering the great pain we have experienced as humanity.
There are some - called 'death fatigue' - people who just grow so tired of death, so they don't want to keep perpetuating death and creating more victims and more anger and more pain. They want to heal from that, and I think that's exactly what God wants to do. And, interestingly enough, that's part of what God's original law was doing with the 'eye for an eye' thing. It was actually to limit the patterns of retaliation and then to begin to heal from that.
