All of my cousins are over 50 and rumor is that my uncle required a post nuptial agreement before the money would be transferred. LOL.
Most wealthy, successful people seem to be control freaks and want to control their money even after they are dead...and for the record, that is fine. It is their money, they can do anything they want to.
My parents have no money, but my inlaws are doing OK. I tell all of them to spend every penny and enjoy their retirement.