I believe killing makes sense if your protecting the youth,*censored* animals do that much.
Animals also gang rape, eat their young, bludgeon each other to death over food, mates, territory or for fun, blindly plunge headlong off cliffs, urinate and defecate wherever they please, cause horrific injuries to other animals just for the sport of it, etc, etc. I not sure those are standards we should be measured against.
Yes, it is easy (and sometimes popular) to suggest the death penalty for paedophiles, but why? How do you avoid miscarriages of justice? Most paedophiles are warped and twisted because of horrific abuse committed against them during their own miserable childhoods. Is there no room for compassion? I.e. punishing the crime, but caring for the person?
Yes, these might be slightly controversial observations, but the knee-jerk "kill the b*st*rds" reaction is usually a fairly ignorant one. Sorry.