Maybe “he wants to spend more time with family”?
As a parent of two very lively small boys, I can say that "enough time with family" is a thing.
2010
Retires from head football coach at University of Florida.
"I know it is time to put my focus on my family and life away from the field."
2011
Becomes the head football coach at Ohio State.
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I say this as a bitter Gators fan.
"Man I hate this place because ____, and I'd rather spend time with my family."
That doesn't preclude wanting to do other things too.