Kids love to take risks. Whether they swing too hard or climb too high in a tree or run too fast, our young people have an exuberance that can lead to danger. The love of the risk is based upon the rushing feeling of the act and the mistaken belief that death or injury is non-existent. Some adults love risks for the same reasons.
Some risks are indeed worth taking. But wisdom must weigh the costs. To impress this point on younger family members, take them to a playground for some free time. But before you turn them loose on the play structures, discuss the rules of safe playing. Define appropriate and inappropriate play. Then let them have some fun. And enjoy the fun with them.