Execution.. I also agree is not an answer to crime punishments. The criminal's punishment is over once and for all.. once he is dead!! Also... just as a human being does not have the right to kill another human being.. I do not belve that the govt has the right to kill him / her either. They should be kept alive... alone... in a dark room, 6 ft by 3 ft.. forever.... no contact with the outside world !!! That is the best. Lonliness... is the BEST medicine!!