When I was 6, my grandparents let me bike around the block and visit friends. At 13-14, I was allowed to do basically whatever as long as I was home by 11 and called if I was going to be late. I think kids need to be taught how to be safe and make good decisions, and not be sheltered and controlled. The teen years are our only chance to truly have freedom and adventures, to relish the friendships and new experiences we just don't have the chance to have in adult life really. It is easy to read or hear about terrible things that happen to some kids, but the fact is those situations often have precipitating events or circumstances, occur in unsafe conditions etc and statically account for .5% of missing kid cases. Your child is more likely to have an accident in the backyard or in a vehicle than be kidnapped or murdered. I say let them play, let them explore, let them socialize, just be a good teacher to them about responsibility, safety and how to be smart if they get into a situation that feels únsafe'