That's also true, though at some point I think having hundreds of millions might just as well be the same as having billions. Not saying I would turn it down either - if someone offered me that kind of salary to do what I love. But I do have two relatives who are considered (on paper) to be billionaires, a cousin and my older brother. My brother bought a 19 million dollar mansion in Florida and now wants me and me mum to come live with him there - it's very tempting. I mean to him, money isn't an object because, it's not something he has to worry about.
In a way it's nice, in a sort of Great Gatsby way - being around the rich makes you feel rich, and you get to benefit from the blessings. I don't think it's necessarily an evil thing to be that rich. A lot depends on what you do with that money and also, whether you made it on the backs of slave labor or exploitation (and in many cases it's almost impossible not to have done so).