I'm not a big fan of safety, in any form. Life entails risk. Anything you do. The important thing is to evaluate the risks, get your mind right and go for it.
I don't think seat belts for anybody or car seats for small children should be mandated. When parents ensure that their children are strictly supervised and accompanied every moment of the day, I think they do their children a grave disservice.
Man, I love this. These people have been doing it every day for hundreds, maybe thousands of years. It can't help but have had a beneficial effect on the gene pool.
If I was that little boy, riding in my sister's gunny sack, I'd be looking for my own forked stick. How hard can it be?