The trial itself will be longer, more complex and more expensive. Appeals in capital cases go directly to the Supreme Court incurring a still greater expense. Usually there are many appeals. The cost becomes exorbitant. The prison system, as well, suffers in a capital punishment system.
Capital punishment is too cheap and easy a way of absolving the guilty conscience of mankind.
In 1969 the Vatican voided a forty year old law decreeing the death penalty for anyone attempting to assassinate the pope. No one was ever executed under that law. In 1974, the United States Catholic Conference declared its opposition to the reinstitution of capital punishment. Respect for Life Capital punishment aids the erosion of respect for life. The gift of life is God's alone, He is the author and sustainer of life.