I always admired how their marriage worked considering they both had demanding careers that they were highly successful in. Both careers were very youth oriented but hers transitioned to more business entrepreneur and overseeing her various business lines over the years. Hers was likely more flexible to shift responsibilities to others and allowed her to put some focus on her family. His was him staying focused on winning and busting his ass to get into and win the super bowl. Getting older may have required more of him to maintain that level of success. Yet, it obviously gives him such great satisfaction that transitioning out of that might be tougher for him. She might have lost patience with him needing to keep playing and not putting more into their home life.
It is sad that it happened, but we all have to live with the consequences of our decisions. Divorce or not, Tom Brady has to transition away from this career at some point and I suspect he is one of those guys that'll get lost because he places so much of his identity into what he did for a living.