I can still justify watching the NFL because the players are getting paid very well, and at least at this point are aware of the risks.
But it is impossible for me to justify watching college anymore. I was always leary of the billion dollar contracts conferences were signing, while severely punishing the players for accepting a jersey from a relative (and at the same time refusing to ban coaches who systematically engaged in illegal activities). But throw in the brain trauma stuff and it's impossible to excuse an academic institution doing this anymore (especially since they also get tax benefits as well).