What do you make of all these latest comebacks?

Look at Freddy Roach, Ali, Gerald McClellan just to name a few that have permantly been disabled from boxing! Parkinsons syndrome is from getting blows to the head, but because of it being so close to the diase that is either heridatary or genitc they named what Roach and Ali have as parkenson syndrome. All these guys are playing with fire, I have competed at a world cl level from the amateurs to pro and I have seen guys messed up directly from boxing in gyms all over the world, it is a shame!