Well said.

General observation: Money is a personality amplifier. 

Good answer:

The most valuable thing I've learned is this: whether you are a rich dysfunctional bigot dropping N-words in my office and throwing your financial weight around while bankrolling mistresses through your shell companies, or a thoughtful philanthropist trying to quietly change the world for the better with your largesse, being wealthy is a relatively lonely existence.

The problems you encounter, while very real and very frustrating, will not elicit sympathy from 99.999% of the planet. Like being an exceptionally beautiful woman, most of the people who approach you are only after one thing, and that perspective warps your ability to connect genuinely with others - one of the most quintessential human needs.

Almost everyone wouldn't mind being a bit more beautiful or a bit more rich, but few can truly appreciate just how alienating it is to have either in such abundant quantity, that they become the object of desire/envy by everyone you meet.