I have three boys. One is 13 years old and is a very, very good player and hits like a freight train. He has never experienced a concussion or complained of any thing related to his head. He is also in every accelerated gifted course the school offers
My middle son is in his second year of playing in pop warner and will continue to do so. My youngest is to young to play right now, but I am sure he will follow in his brother's footsteps, although I will not push him to do so.
I have a lot of mixed emotions about how frantic the 'experts' are making everyone about the game. I was able to play for many years (including college) and while sustaining three concussions myself, am not experiencing any long term effects....as of yet (now 40 years old).