The end result of his being a big girl's blouse is that he needs to have something around to relieve him from the crushing burden of wealth, power and influence. Said thing is a mindlessly happy smile on Liz's face to tell him that there's hope for the future. As long as Lizzie is uncritically optimistic and sees life as a world of rainbows and unicorn farts, her daddy can have the strength to face a wife who has a baffling need for a life beyond the paradise he built to shelter her from the horrible stress he endures, patients who angrily compare him to a mechanic gapping out a spark plug and the emptiness not even his toys can fill.
I can't sympathize with him because no one should ask that of another person. It was never up to Lizzie to laugh and say that her problems were fake and she should just walk off alienation and confusion to make her asshole dad feel better. I also feel nothing but contempt for him because the only person who actually ever needed a war zone speech is the asshole giving them.