David Letterman will turn 67yo tomorrow, April 12. His son, Harry Joseph (named after DL's father) will turn 11yo on November 3, 2014.
OK, i was off a few, but we get the point of David wanting to be with his son at 11. He already lost his chance to be with him earlier on due to his work, so he deserves to be with his family now as he nears older age.