If keeping them to repent is good but what about N years later they were to be released got recruit by Al Queda and caused more harm to Singaporeans...? I think I would like to see them get the hang as a life is lost, they have to pay for their crimes. Also to mention, since they do not regard a human life is precious, why should we care if they are dead. Somemore, holding up a V sign after killing that innocent guy, you think they meant for it to be fun. This death sentence lesson is to teach them to be repentant.
I might be too overboard but I really feel the victim's parents sorrow, the only son... My goodness, what has the world become.