@OhOkKay @RickiTarr The thing is that people who have a private plane don't feel happy every time they use it. They sure felt the first time, but now they feel normal.
When you and I endure our economy class flight we don't feel happy that we're not having to travel 1500km by horse.
My personal take on the folk saying is: Money doesn't bring you happiness, but lack of money brings you sadness.