I really think June's death hit him so hard that he kind of gave up, in a way, decided to follow her....
My grandparents were 92 and 83 and passed away within months of each other....some couples complete each other so well that it's hard for one to carry on without the other.
He was a great man of faith and character. Although he didn't really see himself as great. That was part of his personal beauty, his humility.