since I'm in therapy and all

Due to my current relationship situation I asked my father if he ever regretted being so cordial with his x wife, my mother, enabling him to meet other females and basically get on with his life. His answer somewhat shocked me in it's utmost honest and simplicity "I never think about that, that was years ago." Is this what happens when you've reached the golden years? Never to think about the past, sounds good to me!!