• But you can get CTE from college or high school football too.
• People, especially young people, don't always make the right decisions, and as a society, we tend to try to protect each other, especially our youth, from the worst of those tendencies.
• People subject themselves to all sorts of things for money or the promise of it. We have laws to help slow this race to the bottom as well.
• An average NFL player makes a pittance compared to an average NBA or MLB player.
That said, I prefer to let 'em play if they want to, though I wouldn't know why I wouldn't have "sympathy" for someone whose brain was irreparably damaged because assholes like me incentivized their risk-taking.