I don't think any human needs that kind of wealth, but I also don't begrudge him of it. He earned it.
The problem with society is not that there are rich people - there always have been and always will be. It's in fact a sign of a healthy economy. If you have no inequality, it also means you have no growth or innovation - everyone is equally poor. Cuba and Soviet Russia tried to be examples of this kind of society, and few would argue they are desirable models to emulate.
The problem is rather the number of people who can't find steady employment, earn a livable wage, and take care of the basic necessities of food, shelter, and health. That does need to be addressed, and the sooner the better.