We should probably demolish baseball fields, hockey rinks and walking paths.... They are all potential hazards as well.
I'm sorry your nephew got hurt, but it was nobodies fault but his own. Kids get hurt, it's a apart of growing up.
Laws are there to protect you... If you aren't smart enough to abide by them, without the fear of getting caught I really don't know what to tell you. I don't need a law to tell me to wear a helmet, do you? I guess you really can't teach common sense....too bad.