Well old or young they have to be punished. What about those old and young who had children to marry off, parents to look after, sisters to be taken care off, why didn't these people think about them. If other's life is not valuable so is theirs to us. He should have realised before he committed the crime. Just praying 5 times to God does not make anybody holy. There are many people who don't even look at God but are holy in thier hearts and minds. Punish them. They deserve it.