Costner went after a woman 20 years younger than he was. So he didn't necessarily make a big sacrifice. If you don't want to meet a woman who wants children than he could have dated women his own age. Loneliness is in fact, a reason many people divorce. I have written a divorce column for many years. It can be agonizing to feel lonely while married to someone. She withstood 20 years of Costner being gone four to six months a year. She does not deserve his wealth but she doesn't necessarily deserve to have him stick to a decades old prenup after a 20 year relationship and three children. His children will look to him one day to see how he treated their mother. His kids may not care about a prenup or that their father was wealthy. They will care what kind of man he was to the mother of his children. Again, she may not deserve his vast fortune but she doesn't necessarily deserve to leave a man who wouldn't want to be better to a woman after all of those years.