I don't dispute any of that. My point is that it's a risk that everyone, to a great extent, knows about and are willing to take. Most of the NFL players don't care about the health effects until it gets extremely drastic, they are willing to risk their health to get the chance to make a life-changing amount of money. Some people, like Peyton Manning who suffered a grave neck injury, already have the money, but want to do it for the sheer competitive thrill.

To put it into context, it's similar to a couple of college grads spending all their time trying to make a startup. Their chance of success is extremely small, and yet they are still willing to go for it. And if they work 100 hrs a week, they could suffer health problems too, including physical and mental health issues, like depression. There are several stories of startup founders committing suicide because of their lack of success.

How would you feel if a bunch of non-practitioners were sitting around, and added regulations that limited your ability to form a startup because they feared the risks that you were willing to undertake for the chance to "make it rich"?