I was allowed to have sparklers as a kid, and I learned very quickly to be careful with them. Fortunately, I have no permanent scars that I know of.
Paul Harris (who is a local radio host on KMOX-AM here in St. Louis) lamented recently that parents today are too over-protective of their kids, attempting to protect them from the smallest of hurts. I agreed with his thoughts...kids need to learn pain and consequences. Otherwise, they'll be fucked when they get older. Though I think I understand where Cloud is coming from on this.