No one knows the personal story of his marriage except he and his wife. No one, not either mother, has ever implied that he wasn't an attentive father. If he's is playing "badly," as you put it, that's only because of the standard set by --- him.
Could very well have been the “retirement” that ended the marriage, because they suddenly were together more, and realized then it probably wasn’t going to work out.
But the man is no saint. He's human. I'm sure he loves his kids, but the amount of time he needed to dedicate to his craft over the last two decades meant he missed a lot of time with his wife and kids. And that's completely fine. But to think that he wouldn't date a smokin hot younger woman just because of his fatherly duties is silly, IMHO.