It's true that we don't know all the details, but you're just speculating here. What we DO know is that CTE results in progressive brain damage from glutamate toxicity. Among other changes, you suffer personality changes that can make you interpret situations in extremes. Glutamate toxicity also causes severe anxiety. You have a hard time with executive function, making things like planning, organizing, and decision-making very difficult. Even if you're not depressed, your baseline stress can be relentless. Major life challenges that are difficult for "normal" people to get through can push you over the edge.
There isn't a whole lot of empathy or sympathy. You appear to function pretty normally, so people assume your problem is purely psychological, which typically comes with less concern. People think you can just take a pill, think positively, and "pull yourself together".
In cases of people like Seau's, they also have to deal with all the people out there who dismiss the pain because it was Seau's choice to play and he made a lot of money. His choice and his money don't make him any less human.
