Eeeeh... No. The only reason you might want to not execute them is so they don't kill their victims. But the damage they cause...

No. I wish we still had the guillotine just for them. But Robert Badinter pleaded well enough that we let a child killer live the restbof his days in a cell, paid by us, because apparently it was too brutal to kill a guy who rolled the body of a kid in a carpet under his bed. Fuck that noise.